added DebugDraw::clear_texts method #312

Job	Run time
🐧 Linux (x86_64, editor)	45s
🍏 MacOS (universal, editor)	4m 27s
🐧 Linux (x86_64, template_release)	58s
🤖 Android (arm32, template_debug)	55s
🍏 MacOS (universal, template_release)	1m 25s
🕸 Web (wasm32, template_debug)	1m 27s
🤖 Android (arm32, template_release)	50s
🕸 Web (wasm32, template_release)	1m 35s
🤖 Android (arm64, template_debug)	54s
🏁 Windows (x86_64, editor)	2m 54s
🤖 Android (arm64, template_release)	43s
🤖 Android (x86_32, template_debug)	1m 11s
🏁 Windows (x86_64, template_release)	3m 18s
🤖 Android (x86_32, template_release)	45s
🤖 Android (x86_64, template_debug)	55s
🤖 Android (x86_64, template_release)	43s
📦 Collect GDExtension binaries	6s
	23m 51s

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