Translation Setup V1 - Githubissues

[X] Static text on the campaign site is now retrieved from an object.
[X] Users can now change languages
[X] Language code is now attached to every apiCall after choice is made. The choice is saved in local storage and preloaded into redux when user refreshes. (It's how we remember use's choice)
[X] Currently contains a fixed set of languages. Language list does not depend on the api.
[X] Static object is pre translated to all the available language options

That page has been added as a tab to campaigns. So offered languages are campaign specific.

What kind of change does this PR introduce? (check at least one)

Does this PR introduce a breaking change? (check one)

If yes, please describe the impact and migration path for existing applications:

The PR fulfills these requirements:

[x] It's submitted to the dev branch or to a feature branch, not the main branch
[ ] When resolving a specific issue, it's referenced in the PR's title (e.g. fix #xxx[,#xxx], where "xxx" is the issue number)
[ ] All tests are passing: https://github.com/massenergize/massenergize-campaigns/blob/main/.github/CONTRIBUTING.md#development-setup
[ ] New/updated tests are included

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massenergize / massenergize-campaigns