[Python] Render enums as Python IntEnum #6123

Job	Run time
Build Linux (g++-13)	2m 2s
Build Linux with -DFLATBUFFERS_NO_FILE_TESTS	2m 4s
Build Linux (clang++-18)	2m 1s
Build Windows C++ (11)	3m 41s
Build .NET Windows	1m 7s
Build Linux C++ (11, g++-13)	2m 2s
Build Windows C++ (14)	4m 7s
Build .NET Windows (-p:UnsafeByteBuffer=true)	1m 20s
Build Linux C++ (11, clang++-18)	2m 2s
Build Windows C++ (17)	4m 29s
Build Linux C++ (14, g++-13)	2m 3s
Build Windows C++ (20)	5m 37s
Build Linux with out-of-source build location	1m 13s
Build Linux C++ (14, clang++-18)	1m 56s
Build Windows C++ (23)	5m 28s
Build Linux C++ (17, g++-13)	2m 13s
Build Mac (for Intel)	1m 57s
Build Windows 2019	4m 4s
Build Linux C++ (17, clang++-18)	2m 7s
Build Android (on Linux)	4m 3s
Build Benchmarks (on Linux) (g++-13)	3m 6s
Build Linux C++ (20, g++-13)	2m 24s
Build Linux C++ (20, clang++-18)	2m 24s
Build Linux C++ (23, g++-13)	2m 30s
Check Generated Code (g++-13)	1m 11s
Check Generated Code on Windows	3m 51s
Check Generated Code (clang++-18)	1m 11s
Build Go	1m 27s
Build Java	18s
Build Kotlin Linux	3m 7s
Build Kotlin MacOS	3m 30s
Build Mac (universal build)	4m 1s
Build PHP	1m 6s
Build Python	1m 0s
Build Rust Linux	1m 50s
Build Rust Windows	1m 30s
Build Swift (5.8)	2m 1s
Build Swift Wasm	3m 0s
Build TS	1m 36s
Build Swift (5.9)	2m 5s
Build Swift (5.10)	2m 12s
Build Dart	1m 20s
Build Nim	1m 19s
release-digests	0s
provenance	0s
	1h 43m 35s

Provide feedback