ignore `fixup!`, `amend!`, `squash!` commits

[muni-corn]

feature description

forgive me if this can be implemented using the existing rules, but i'm not sure how to ignore fixup! commits (etc) with commitlint-rs.

this is my current configuration:

rules:
  description-empty:
    level: error
  description-format:
    level: error
    format: ^[a-z].*$
  description-max-length:
    level: error
    length: 72
  scope-max-length:
    level: warning
    length: 10
  scope-empty:
    level: warning
  type:
    level: error
    options:
      - build
      - chore
      - ci
      - docs
      - feat
      - fix
      - perf
      - refactor
      - test

if i go to fixup a commit with git commit --fixup ..., commitlint-rs will fail, and i can't commit the fixup.

i've tried adding "fixup!" and "fixup" to the type.options array with no luck. i'd probably have to add "fixup! feat", "fixup! fix", etc.

while i can add --no-verify to bypass this, having commitlint skip these commits would be much more convenient!

expected behavior

commitlint-rs should skip linting fixup!, squash!, and amend! commits entirely. (and have configuration options to enable or disable this behavior.)