Add install route and seo

[rphovley]

The Pull Request is ready

• all github actions are passing
• only a single issue was worked on
• fixes #0
• the branch follows the naming schema issue-123-enable-x-does-not-disable-y
• the pull request has a sensible title

Intention

With this change I intend to add install route and seo

The code follows best practices

• duplicate code has been extracted where possible
• issues for follow-up tasks have been created
• tests have been written for any new functionality
• there is no any type used
• texts have been checked for grammar and spelling issues

Notes

[github-actions]

Visit the preview URL for this PR (updated for commit 9725650):

https://codeclimbersio--pr216-issue-0-redirect-ins-kcrt9nv2.web.app

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