feat(ci): Introduce release-please and automatic publishing

.github/release-please/config.json

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+{
+    "bootstrap-sha": "f7866247c9cdd0431211b267d2507e8cc2aaf4dd",
+    "include-component-in-tag": false,
+    "bump-minor-pre-major": true,
+    "bump-patch-for-minor-pre-major": true,
+    "packages": {
+        ".": {
+            "component": "zksync-crypto",
+            "release-type": "simple"
+        }
+    }
+}

.github/release-please/manifest.json

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+{
+    ".": "0.28.0"
+}

.github/workflows/release-please-prepare-branch.yaml

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+on:
+  push:
+    branches:
+      - release-please--branches--main--components--zksync-crypto
+
+env:
+  EXPECTED_COMMIT_MESSAGE: "Update version in Cargo.toml"
+  CARGO_TERM_COLOR: "always"
+  CARGO_INCREMENTAL: "0"
+  # Rust version to use.
+  nightly: nightly-2024-08-01
+
+name: release-please-update-versions
+jobs:
+  check_state:
+    name: "release-please: Check if Cargo.toml is updated"
+    runs-on: [ubuntu-latest]
+    outputs:
+      already_committed: ${{ steps.condition.outputs.already_committed }}
+
+    steps:
+      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+
+      - name: Check last commit
+        id: condition
+        run: |
+          COMMIT=$(git log -1 --pretty=%B)
+          if [[ "$COMMIT" == "$EXPECTED_COMMIT_MESSAGE" ]]; then
+            echo "Cargo.lock is already updated"
+            echo "already_committed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "Cargo.lock should be updated"
+            echo "already_committed=false" >> "$GITHUB_OUTPUT"
+          fi
+
+  update_version:
+    runs-on: [ubuntu-latest]
+    name: "release-please: Update version in Cargo.toml"
+    needs: [check_state]
+    if: ${{ needs.check_state.outputs.already_committed != 'true' }}
+    steps:
+      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+        with:
+          persist-credentials: false
+
+      - name: Install Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: ${{ env.nightly }}
+          components: rustfmt, clippy
+          # Remove default `-D warnings`. This is a temporary measure.
+          rustflags: ""
+
+      # cargo-workspaces fails to update versions in some cases.
+      - name: Install cargo-edit
+        run: cargo install cargo-edit
+
+      - name: Bump version
+        run: |
+          NEW_VERSION=$(cat .github/release-please/manifest.json | jq -r '."."')
+          cargo-set-version set-version $NEW_VERSION --workspace
+
+      - name: Push changes
+        run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "zksync-era-bot"
+          git remote set-url origin 'https://${{ secrets.RELEASE_TOKEN }}@github.com/matter-labs/zksync-crypto.git'
+          git add ./Cargo.toml
+          git commit -m "$EXPECTED_COMMIT_MESSAGE"
+          git push

.github/workflows/release-please.yaml

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+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+env:
+  CARGO_TERM_COLOR: "always"
+  CARGO_INCREMENTAL: "0"
+  RUSTC_WRAPPER: "sccache"
+  SCCACHE_GHA_ENABLED: "true"
+  # Rust version to use.
+  nightly: nightly-2024-08-01
+
+permissions:
+  contents: write
+  pull-requests: write
+
+name: release-please
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    outputs:
+      releases_created: ${{ steps.release.outputs.releases_created }}
+      release_please_output_json: ${{ toJSON(steps.release.outputs) }}
+    steps:
+      - name: Run release-please
+        id: release
+        uses: googleapis/release-please-action@7987652d64b4581673a76e33ad5e98e3dd56832f # v4.1.3
+        with:
+            token: ${{ secrets.RELEASE_TOKEN }}
+            config-file: .github/release-please/config.json
+            manifest-file: .github/release-please/manifest.json
+
+      - name: Show outputs
+        env:
+          OUTPUTS: ${{ toJSON(steps.release.outputs) }}
+        run: echo "$OUTPUTS"
+
+  process-release:
+    runs-on: [ubuntu-22.04-github-hosted-16core]
+    needs: [release-please]
+    if: ${{ needs.release-please.outputs.releases_created == 'true' }}
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # v4
+
+      - name: Install Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          toolchain: ${{ env.nightly }}
+          # Remove default `-D warnings`. This is a temporary measure.
+          rustflags: ""
+
+      - name: Install sccache
+        uses: mozilla-actions/[email protected]
+
+      - name: Install cargo-workspaces
+        run: cargo install cargo-workspaces
+
+      - name: Build each package separately
+        run: cargo ws exec cargo build
+
+      - name: Login to crates.io
+        run: cargo login ${{ secrets.CRATES_IO_TOKEN }}
+
+      - name: Publish
+        run: cargo ws publish --publish-as-is --allow-dirty
+
+      - name: Set owners for new packages
+        # `cargo owner --add` fails if the package is already owned by the same entity,
+        # so we have to check if the package is already owned by the organization.
+        run: |
+          ORG_OWNER=github:matter-labs:crates-io
+          for PKG in $(cargo ws list); do
+            cargo owner --list --quiet $PKG | grep $ORG_OWNER || cargo owner --add $ORG_OWNER $PKG
+          done
+
+      - name: Send Release Info
+        uses: matter-labs/format-release-please-for-slack-action@69e6fe9e4ec531b7b5fb0d826f73c190db83cf42 # v2.1.0
+        with:
+          release-please-output: ${{ needs.release-please.outputs.release_please_output_json }}
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_RELEASES }}
+
+      - name: Notify about failure
+        if: failure()
+        uses: matter-labs/format-release-please-for-slack-action@69e6fe9e4ec531b7b5fb0d826f73c190db83cf42 # v2.1.0
+        with:
+          release-please-output: '{ "body": "⚠️ Failed to publish the release" }'
+          slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_RELEASES }}