Consolidate legacy argument parsing for head/tail #727

Job	Run time
L10n/Locale Support Verification	4m 51s
L10n/Locale Embedding - Multicall Binary	44s
L10n/Installation Test (Make & Cargo) (ubuntu-latest, feat_os_unix)	2m 34s
L10n/Installation Test (Make & Cargo) (macos-latest, feat_os_macos)	1m 33s
L10n/Locale Embedding - Ls Utility	1s
L10n/Fluent Syntax Check	4m 52s
L10n/French Integration Test	1s
L10n/Locale Embedding - Cat Utility	1s
L10n/Embedded Locale Regression Test	1m 2s
L10n/Multi-call Binary Install Test (macos-latest, feat_os_macos)	1s
L10n/Build and Test (ubuntu-latest, feat_os_unix)	1s
L10n/Clap Error Localization Test	1s
L10n/Build and Test (windows-latest, feat_os_windows)	2m 52s
L10n/Multi-call Binary Install Test (ubuntu-latest, feat_os_unix)	1s
L10n/Locale Embedding - Cargo Install	1s
L10n/Build and Test (macos-latest, feat_os_macos)	4m 52s
L10n/Locale Embedding Regression Test	1s
	23m 29s

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