Rust

Introduce `AnyTls` #505

Job	Run time
Ensure clippy is happy on heed and heed3	43s
Check all the features of the heed3 project	44s
Check the heed3 project (ubuntu-latest)	20s
Check all the features of the heed project	33s
Check the heed3 project (windows-latest)	2m 24s
Run the heed examples (ubuntu-latest)	34s
Ensure the heed and heed3 project are formatted	11s
Check the heed3 project (macos-latest)	32s
Run the heed examples (macos-latest)	48s
Run the heed3 examples (ubuntu-latest)	24s
Run the heed3 examples (macos-latest)	37s
Test the heed3 project (ubuntu-latest)	43s
Ensure heed3 is not erasing heed	3s
Test the heed3 project (windows-latest)	1m 57s
Test the heed project (ubuntu-latest)	36s
Test the heed3 project (macos-latest)	45s
Test the heed project (windows-latest)	2m 58s
Test the heed project (macos-latest)	42s
	15m 34s

Provide feedback