Add i18n (internationalisation) frontend translations via paraglide js

[spwoodcock]

What type of PR is this? (check all applicable)

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation
• 🧑‍💻 Refactor
• ✅ Test
• 🤖 Build or CI
• ❓ Other (please specify)

Related Issue

Work towards #1169

Describe this PR

• Added paraglide libraries + Vite config.
• Added some basic translations to test with English and Brazillian Portuguese.
• Added a locale switcher in the sidebar.
• Reactive locale switching is now possible throughout the app!
• We just need translations and to add the placeholders.

@DanielJDufour I spend the time researching & implemented something 👍
Let me know if you have any thoughts on my analysis here

Screenshots

Alternative Approaches Considered

Many options described in https://docs.fmtm.dev/decisions/0005-translations/

Checklist before requesting a review

• 📖 Read the FMTM Contributing Guide: https://github.com/hotosm/fmtm/blob/main/CONTRIBUTING.md
• 📖 Read the HOT Code of Conduct: https://docs.hotosm.org/code-of-conduct
• 👷‍♀️ Create small PRs. In most cases, this will be possible.
• ✅ Provide tests for your changes.
• 📝 Use descriptive commit messages.
• 📗 Update any related documentation and include any relevant screenshots.

[optional] What gif best describes this PR or how it makes you feel?

[DanielJDufour]

I gave it a quick review. Haven't tested it locally yet. Overall, looks awesome.

[NSUWAL123]

Works fine but there are some import errors by typescript.

[spwoodcock]

Works fine but there are some import errors by typescript.

Hmm that should be generated on the first pnpm run dev or build