chore: release v2.0.0

[github-actions]

🤖 New release

• rediff: 1.0.0 -> 2.0.0 (⚠ API breaking changes)

⚠ rediff breaking changes

--- failure function_missing: pub fn removed or renamed ---

Description:
A publicly-visible function cannot be imported by its prior path. A `pub use` may have been removed, or the function itself may have been renamed or removed entirely.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#item-remove
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/function_missing.ron

Failed in:
  function rediff::add, previously in file /tmp/.tmpxRSYcN/rediff/src/lib.rs:1

Changelog

2.0.0 - 2026-01-25

Other

• Depend on git facet (with version for publishing)
• cargo shear fix
• Clippy lints
• Set up github workflows
• Set up captain, add rEADME
• HEIST

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