feat: improve error reporting on invalid rules file path #573

Job	Run time
Clippy	47s
Deny	26s
Coverage	1m 17s
Test features --no-default-features	53s
Test features --no-default-features --features=hash	50s
Test features --no-default-features --features=object	57s
Rustfmt	7s
Rust 1.65.0	1m 36s
Test features --no-default-features --features=process	54s
Test linux	1m 38s
Test features --no-default-features --features=hash,object	1m 16s
Test linux32	1m 37s
Test features --no-default-features --features=object,authenticode	50s
Test Macos 12	4m 58s
Test features --all-features	53s
Test windows	3m 7s
Test windows32	4m 14s
	26m 20s

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