feat: add Firefox support with web-ext

[JoshuaKGoldberg]

PR Checklist

• Addresses an existing open issue: starts on 🚀 Feature: Firefox extension #7
• That issue was marked as status: accepting prs
• Steps in CONTRIBUTING.md were taken

Overview

Adds https://extensionworkshop.com's web-ext tool instead of the existing zip script to build a Firefox-ready zip, and adds development + production docs for Firefox alongside the existing Chrome ones.

Doesn't yet look into Edge or Safari. That can be a next step or two for the rest of #7.

cc @estevezluis @schalkneethling - builds off the changes in #153.

Co-authored-by: Schalk Neethling schalk@mechanical.ink
Co-authored-by: Luis Estevez contact@luisestevez.me

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (32e4165) 10.73% compared to head (6e36e01) 10.73%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #177   +/-   ##
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  Coverage   10.73%   10.73%           
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  Files           6        6           
  Lines         326      326           
  Branches        8        8           
=======================================
  Hits           35       35           
  Misses        291      291           

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[JoshuaKGoldberg]

Maybe something to look into later on...

 WARN  3 deprecated subdependencies found: har-validator@5.1.5, request@2.88.2, uuid@3.4.0
Already up to date
Progress: resolved 989, reused 947, downloaded 0, added 0, done
 WARN  Issues with peer dependencies found
.
└─┬ web-ext 7.8.0
  └─┬ addons-linter 6.13.0
    └─┬ addons-scanner-utils 9.3.0
      └── ✕ unmet peer node-fetch@2.6.11: found 3.3.1 in web-ext

[JoshuaKGoldberg]

For the deprecation warnings: mozilla/sign-addon#932.

For node-fetch: mozilla/addons-scanner-utils#271.

[JoshuaKGoldberg]

Aha! Nice. mozilla/web-ext#2737

This will all be fixed soon.

[JoshuaKGoldberg]

@all-contributors please add @luisestevez.me> for code.

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[allcontributors]

@JoshuaKGoldberg

Could not find the user luisestevez.me> on github.

[JoshuaKGoldberg]

Fixes #7.