Implement memory scanning action using YARA

[CRefice]

This PR adds VirusTotal/yara-x as an (optional) dependency and adds an action, yara_scan_memory that uses it to scan one or more running processes' memory using a specified YARA signature.

The extra dependency introduced some other transitive dependencies that broke some test code (mostly due to the library bringing in some additional impl traits on standard types), so there are also some edits to unrelated files to fix those breakages.

[panhania]

The extra dependency introduced some other transitive dependencies that broke some test code (mostly due to the library bringing in some additional impl traits on standard types)

How is it possible? Doesn't it break the orphan rule? 🤔

[CRefice]

The extra dependency introduced some other transitive dependencies that broke some test code (mostly due to the library bringing in some additional impl traits on standard types)

How is it possible? Doesn't it break the orphan rule? 🤔

One of the errors was caused by a dependency introducing something like impl Into<MyType> for usize (which is legal) and that caused a test to fail to compile because it had a call to assert_eq!(expected_value, some_usize.into()) without explicitly specifying the type, and the compiler got confused because that into could also have been a MyType now whereas it couldn't have previously. I was also shocked by this.