feat: separate calibnet and mainnet

[LesnyRumcajs]

Summary of changes

Changes introduced in this pull request:

• Forest calibnet and mainnet faucet now live under distinct URLs. The former page serves as a landing page with available faucets.

Reference issue to close (if applicable)

Closes #69

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code
  adheres to the team's
  documentation standards,
• I have added tests that prove my fix is effective or that my feature works
  (if possible),