Expose user-defined callables into Python #9021

Job	Run time
Format Q# Files	43s
Format	22s
Build and test (windows-latest)	9m 10s
Clippy	35s
Build and test (ubuntu-latest)	6m 0s
Build and test (macos-14)	6m 49s
Integration tests (windows-latest)	10m 20s
Rust Unit tests (windows-latest)	6m 16s
Integration tests (ubuntu-latest)	6m 12s
Rust Unit tests (ubuntu-latest)	3m 7s
Integration tests (macos-14)	6m 35s
Check web files	30s
Rust Unit tests (macos-14)	2m 36s
Status Check	0s
	59m 15s

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