pidwait: Use common process_matcher (+ move a pidwait feature there) #1283

Job	Run time
cargo fmt --all -- --check	6s
cargo test (ubuntu-latest)	36s
Code Coverage (ubuntu-latest, unix)	1m 53s
cargo test (macOS-latest)	56s
cargo check (ubuntu-latest)	18s
Code Coverage (macos-latest, macos)	2m 26s
cargo test (windows-latest)	2m 30s
cargo check (macOS-latest)	27s
Code Coverage (windows-latest, windows)	4m 20s
cargo check (windows-latest)	2m 52s
	16m 24s

Provide feedback