Improve workflow with built-in BT resources #735

Job	Run time
cache-env	1s
⚙️ Static checks	11s
🧪 Unit tests	3m 4s
🪟 Windows / Editor (x86_64, release)	8m 22s
🐧 Linux / Editor (x86_64, release)	14m 26s
🍎 macOS / Editor (x86_64, release)	2m 44s
🐧 Linux / Template (x86_64, release)	9m 13s
🔌 GDExtension / 🐧 Linux (x86_64, release)	23s
🍎 macOS / Editor (arm64, release)	3m 5s
🐧 Linux / Editor .NET (x86_64, release)	17m 5s
🔌 GDExtension / 🐧 Linux (x86_64, debug)	40s
🔌 GDExtension / 🪟 Windows (x86_64, release)	2m 13s
🔌 GDExtension / 🪟 Windows (x86_64, debug)	2m 23s
🔌 GDExtension / 🍎 macOS (universal, release)	57s
🔌 GDExtension / 🍎 macOS (universal, debug)	59s
🔌 GDExtension / 📦 Package extension	30s
🍎 macOS / Make macOS Bundles (tmp-macos, false, true)	37s
	1h 6m 53s

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