Updating package documentation

[Emmanuel-Tyty]

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Changes Fixes #564

• Enhanced existing docs : README.md, cardano-binary, cardano-crypto-class, cardano-crypto-praos
• Added new READMEs : base-deriving-via, cardano-slotting, cardano-strict-containers, heapwords, measures, orphans-deriving-via

What's Included

• Working code examples for each package
• Clear API usage patterns
• Integration guides between packages
• Developer onboarding path

Benefits

• Lowers barrier to entry for new developers
• Provides missing documentation for previously undocumented packages
• Consistent structure across all packages
• Production-ready examples with error handling