Add Godot ClassDB API introspection #1166

Job	Run time
Python 3.13 / ubuntu-latest	4m 9s
Stale server smoke / Windows	1m 19s
Python 3.11 / ubuntu-latest	1m 52s
Release smoke / macos-latest	50s
Stale server smoke / macOS	43s
Game capture smoke / Windows	1m 57s
Release smoke / windows-latest	1m 42s
Godot tests / Linux	1m 8s
Game capture smoke / Linux	1m 3s
Godot tests / macOS	1m 37s
Godot tests / Linux (Godot 4.3)	1m 15s
Stale server smoke / Linux	43s
Game capture smoke / macOS	1m 51s
Godot tests / Windows	2m 34s
Release smoke / ubuntu-latest	39s
	23m 22s

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