Implement GDExtension support #125

Job	Run time
🧪 Unit tests	2m 49s
🧪 Unit tests	2m 49s
🐧 Linux / Editor (x86_64, release)	13m 41s
🐧 Linux / Editor (x86_64, release)	13m 41s
🔌 GDExtension / 🐧 Linux (x86_64, release)	1m 31s
🔌 GDExtension / 🐧 Linux (x86_64, release)	1m 31s
🐧 Linux / Template (x86_64, release)	10m 12s
🐧 Linux / Template (x86_64, release)	10m 12s
🍎 macOS / Editor (x86_64, release)	6m 28s
🍎 macOS / Editor (x86_64, release)	6m 28s
🔌 GDExtension / 🐧 Linux (x86_64, debug)	42s
🔌 GDExtension / 🐧 Linux (x86_64, debug)	42s
🍎 macOS / Editor (arm64, release)	5m 32s
🍎 macOS / Editor (arm64, release)	5m 32s
🔌 GDExtension / 🪟 Windows (x86_64, release)	2m 19s
🔌 GDExtension / 🪟 Windows (x86_64, release)	2m 19s
🔌 GDExtension / 🪟 Windows (x86_64, debug)	2m 41s
🔌 GDExtension / 🪟 Windows (x86_64, debug)	2m 41s
🪟 Windows / Editor (x86_64, release)	7m 9s
🪟 Windows / Editor (x86_64, release)	7m 9s
🔌 GDExtension / 🍎 macOS (universal, release)	4m 0s
🔌 GDExtension / 🍎 macOS (universal, release)	1m 41s
🪟 Windows / Editor .NET (x86_64, release)	10m 30s
🪟 Windows / Editor .NET (x86_64, release)	10m 30s
🔌 GDExtension / 🍎 macOS (universal, debug)	58s
🔌 GDExtension / 🍎 macOS (universal, debug)	58s
🍎 macOS / Make macOS Bundles	1m 39s
🍎 macOS / Make macOS Bundles	1m 39s
	2h 18m 3s

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