Problem

Right now, when you have no templates configured for use with Tasks, the Tasks tab is invisible. This impedes discoverability of the feature. Additionally, because of how the React development server works, this means that you will never see the link to /tasks on port 8080 of develop.sh.

Proposed solution

• Always show the link to /tasks in the top navbar
• If no tasks-compatible templates are configured, show a CTA with a link to the tasks documentation
• We should ensure that the existing env CODER_HIDE_AI_TASKS is still respected.