Insert shim frames at entries points to the interpreter.

[markshannon]

Inserting shim frames simplifies RETURN_VALUE, YIELD_VALUE and RETURN_GENERATOR and enables for to be specialized for generators, and await to be specialized for coroutines.

See faster-cpython/ideas#436 for full discussion

• PR: GH-96421: Introduce cleanup contexts for inlined frames #98795

• PR: GH-96421: Insert shim frame on entry to interpreter #96319