Support port-forwarding for appropriate resources

[jinnovation]

Contributes to #234.

[jinnovation]

Create follow-up tickets for:

• Showing port-forward status in modeline;
• Command to stop an existing port-forward;
• Disable on auth;
• Completion support for exposed ports on the given service

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 33 lines in your changes missing coverage. Please review.

Project coverage is 57.50%. Comparing base (ce12adb) to head (67506d1).

Files with missing lines	Patch %	Lines
kele.el	0.00%	33 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #237      +/-   ##
==========================================
- Coverage   59.85%   57.50%   -2.36%     
==========================================
  Files           1        1              
  Lines         807      840      +33     
==========================================
  Hits          483      483              
- Misses        324      357      +33     

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