Implement selector expressions #430

Job	Run time
Bats Tests	20s
CI / Typos	6s
CI / Test (macos-latest)	35s
CI / Check for Fuzz Tests	16s
CI / Vulncheck	19s
CI / Test (windows-latest)	59s
CI / CodeCov	46s
CI / Test (ubuntu-latest)	46s
CI / Lint	25s
CI / Fuzz (FuzzTokenString, go.followtheprocess.codes/zap/internal/syntax/token)	1m 19s
CI / Fuzz (FuzzResolver, go.followtheprocess.codes/zap/internal/syntax/resolver)	1m 30s
CI / Fuzz (FuzzParser, go.followtheprocess.codes/zap/internal/syntax/parser)	1m 26s
CI / Fuzz (FuzzScanner, go.followtheprocess.codes/zap/internal/syntax/scanner)	1m 21s
CI / Fuzz (FuzzPosition, go.followtheprocess.codes/zap/internal/syntax)	1m 35s
	11m 43s

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