feat: FireFox Port & Release Artifacts

[cdrani]

Update to allow for FireFox Extension

• Update manifest.json with required FireFox specific keys. Ended up just having separate manifest for chrome and FireFox
• Update release.yml to create FireFox zipped archive for release section
• Refactor messaging service between page, content, and background to address FireFox security issues
• Replace usage of insertAdjacentHTML (FireFox complains about security issue)
• Use getAttribute to get custom attributes like 'aria-label', 'role', etc. element.ariaLabel does not work in FireFox

closes #95