fix(ts/prefer-literal-enum-member): should allow bitwise expressions

[sasial-dev]

Currently, ts/prefer-literal-enum-member will error with something like

export const enum Permission {
	Everyone = 1,
	QA = 1 << 1,
	Developer = 1 << 2,
	// BD = 1 << 3,
}

This PR rectifies this.

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