ci: deduplicate workflows runs

.github/workflows/bc.yml → .github/workflows/bc.yaml

@@ -1,5 +1,8 @@
-on: [push, pull_request]
+---
 name: Roave
+
+on: workflow_call
+
 jobs:
   roave_bc_check:
     name: BC Check

.github/workflows/pull-request.yaml

@@ -0,0 +1,8 @@
+---
+name: Pull-Request
+
+on: pull_request
+
+jobs:
+    bc:
+        uses: ./.github/workflows/bc.yaml

.github/workflows/push.yaml

@@ -0,0 +1,11 @@
+---
+name: Push
+
+on:
+    push:
+        branches:
+            - master
+
+jobs:
+    bc:
+        uses: ./.github/workflows/bc.yaml