chore: release v0.3.0

[github-actions]

🤖 New release

• idar: 0.2.0 -> 0.3.0 (⚠️ API breaking changes)

⚠️ idar breaking changes

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.38.0/src/lints/enum_variant_added.ron

Failed in:
  variant AppError:InvalidDeduplicationReport in /tmp/.tmpmnTgBR/idar/src/errors.rs:12

Changelog

0.3.0 - 2025-01-04

Added

• improve errors for removal command

Other

• improve readme and remove comment

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