Add "get involved" page

[oduameh]

---

• CHANGELOG updated or not needed
• Documentation updated or not needed
• Haddocks updated or not needed
• No new TODOs introduced or explained herafter

[olgahryniuk]

Kind request to the Hydra team; can you please fix several things with this PR:

• The proposed 'Get involved' section should be placed under FAQs (if everyone agrees)

• There are several inconsistencies with titles in 'Use cases' - the ones on the navigation should also follow the 'Sentence case' approach:

  • Change 'Inter-Wallet Payments' to 'Inter-wallet payments' in the navigation bar
  • Change 'Pay-Per-Use API' to 'Pay-per-use API' in the navigation bar
  • Change 'Poker Game' to 'Poker game' in the navigation bar.

  We will appreciate your support, as we can't find specific files to make these changes.

  cc @ffakenz @noonio @ch1bo

[noonio]

You'll need to check this - https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/allowing-changes-to-a-pull-request-branch-created-from-a-fork - to enable us to edit the branch on the fork

[olgahryniuk]

Thanks, @noonio.
@oduameh, please provide the team with editing rights

[oduameh]

You'll need to check this - https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/allowing-changes-to-a-pull-request-branch-created-from-a-fork - to enable us to edit the branch on the fork

Hi @noonio I have just sent you a collaboration request

[noonio]

Those changes have been made now @olgahryniuk