resmush 1.0.0

• Bumped the major version to indicate the package has reached a mature
  development state.
• Minimum R version required: 4.1.0.
• Migrated documentation to Quarto.
• Corrected typos.

What's Changed

• Move to Quarto by @dieghernan in #28

Full Changelog: v0.2.2...v1.0.0