Move examples out of repository #3533

Job	Run time
doc-lints	41s
rustfmt	14s
unit-test	2m 18s
license-guard	31s
clippy	1m 45s
godot-itest (windows)	3m 37s
godot-itest (macos)	2m 36s
godot-itest (linux-features-experimental)	3m 25s
godot-itest (linux-4.3)	59s
godot-itest (linux-4.4)	1m 4s
godot-itest (linux-full)	4m 46s
godot-itest (linux-memcheck)	4m 23s
godot-itest (linux-4.2)	1m 10s
godot-itest (linux-4.1)	59s
ci-status	2s
	28m 30s

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