Add configurable support link to footer (Y25-580)

[adilraza99]

Summary

This PR adds a configurable "Support" link to the Traction footer, allowing users to access Fresh Service Support when required.

Changes

• Added VITE_SUPPORT_URL environment variable across all env files
• Conditionally render support link in footer when URL is configured
• Open link in new tab with secure attributes
• Graceful fallback when variable is unset
• Added unit tests for rendering and fallback behavior

Testing

• ESLint passed
• Prettier formatting verified
• Unit tests added for link visibility and attributes

Closes #2478

[adilraza99]

Hi @BenTopping,
I've added the configurable Fresh Service support link to the footer as discussed.
Please let me know if you'd like any adjustments or refinements. Thanks!

[adilraza99]

@BenTopping CI workflows appear to be restricted for fork-based PRs.

All changes were tested locally and lint/tests pass successfully.
Please let me know if you'd like me to rebase or make any adjustments.

[adilraza99]

@BenTopping
It looks like the GitHub Actions workflows are waiting for maintainer approval for this fork-based PR.

Could you please approve and trigger the CI checks when you get a chance?

Only InfoFooter.vue was modified as part of this change.
Let me know if any further adjustments are needed.

Thanks!

[adilraza99]

Hi @stevieing and @BenTopping,

Quick follow-up on this PR. The changes are ready and there are no merge conflicts.
There are a couple of workflows awaiting maintainer approval due to fork restrictions.

Whenever you get a chance, could you please approve the workflows so CI can run?
Happy to make any adjustments if needed.

Thanks!