Feat: gbfs validator header navigation

[Alessandro100]

closes: https://github.com/MobilityData/product-tasks/issues/161

Summary:

On desktop and mobile the "validators" navigation options should appear in DEV and QA, gated by a feature flag

Expected behavior:

You should be able to view the validators nav menu in the header or drawer (in mobile). When selecting it, it should bring you to the 'gbfs-validator' route

Testing tips:

Using the navigation header, the gbfs validator should bring you to the gbfs validator page

NOTE

• This PR contains the content from the POC / demo, ignore those files in this PR, it will be re-worked in future tickets. In this PR focus on the nav and feature flag code
• I added a disabled GTFS validator option to hint to users that this is something that will come at some point

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with ./scripts/api-tests.sh to make sure you didn't break anything
• Add or update any needed documentation to the repo
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

Desktop

Mobile

[github-actions]

*Lighthouse ran on https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app/ * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟢 96	🟢 100	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app/feeds * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟠 56	🟢 91	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app/feeds/gtfs/mdb-2126 * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟠 61	🟢 95	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app/feeds/gtfs_rt/mdb-2585 * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟢 95	🟠 88	🟢 100	🟢 100

*Lighthouse ran on https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app/gbfs/gbfs-flamingo_porirua * (Desktop)
⚡️ HTML Report Lighthouse report for the changes in this PR:

Performance	Accessibility	Best Practices	SEO
🟢 100	🟢 100	🟢 100	🟢 100

[github-actions]

Preview Firebase Hosting URL: https://mobility-feeds-dev--pr-1406-trnkvtb2.web.app

[davidgamez]

I'm not sure if this is part of this PR, we need to update the "Run Validator Report" link in the GBFS feed summary page to the new gbfs validator address

[Alessandro100]

I'm not sure if this is part of this PR, we need to update the "Run Validator Report" link in the GBFS feed summary page to the new gbfs validator address

It's not a part of this PR, we have a ticket for this: https://github.com/MobilityData/product-tasks/issues/162

[emmambd]

@Alessandro100 It's so beautiful 😍 I'm excited to see us integrate all our tools into one discoverable platform!

[Alessandro100]

gtfs and gtfs rt validator added

[davidgamez]

LGTM!