Hyphenate package names

[clehner]

For consistency, update the wasm and cbindings package names to use hyphenation.

• didkit_wasm → didkit-wasm
• didkit_cbindings → didkit-cbindings

[wyc]

is this the preferred rust package naming convention? i looked it up online and saw some discussion

https://rust-lang.github.io/rfcs/0940-hyphens-considered-harmful.html
rust-lang/api-guidelines#29
rust-lang/cargo#2775
rust-lang/book#1709
rust-lang/cargo#6700

after reading all this stuff, i'm still not sure what's best. i guess choose your own adventure, but it should be consistent for all our packages!

[clehner]

@wyc thanks for those links. Some additional useful discussion and links are in unicode-org/icu4x#304.

I am favoring hyphenated package names where possible, and agree on consistency.

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Summarizing some of the points, for reference…

In favor of hyphen:

• More consistent with other systems. Rust RFC 0940 mentions GitHub, npm, RubyGems and Debian.
• More consistent with executable names.
• In greater use in crates.io. Use _ in crate names unicode-org/icu4x#304 (comment)

In favor of underscore:

• Easier to select for copy and paste. Use _ in crate names unicode-org/icu4x#304 (comment)
• Consistency with Python. Use _ in crate names unicode-org/icu4x#304 (comment)
• Consistency with crate names.

Doesn't matter:

• Cargo registry (Alternative Registries excepted) treats them equivalent.
• More things might start treating them as equivalent.

[wyc]

Appreciate the great summary. I am happy with the outcome of hyphenated links.

[clehner]

Rebased.