Rust

Introduce `AnyTls` #492

Job	Run time
Check all the features of the heed3 project	31s
Check all the features of the heed project	38s
Check the heed3 project (ubuntu-latest)	21s
Ensure clippy is happy on heed and heed3	29s
Run the heed examples (ubuntu-latest)	37s
Ensure the heed and heed3 project are formatted	13s
Run the heed examples (macos-latest)	35s
Run the heed3 examples (ubuntu-latest)	25s
Check the heed3 project (windows-latest)	2m 29s
Check the heed3 project (macos-latest)	22s
Run the heed3 examples (macos-latest)	39s
Test the heed3 project (ubuntu-latest)	43s
Test the heed project (ubuntu-latest)	1m 21s
Test the heed3 project (windows-latest)	3m 42s
Ensure heed3 is not erasing heed	4s
Test the heed project (windows-latest)	2m 49s
Test the heed3 project (macos-latest)	50s
Test the heed project (macos-latest)	46s
	17m 34s

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