Prefix port forward links with http://

[MarlonGamez]

Description
This PR changes the output line that we display when port forwarding by prefixing the links with http://. This was requested by IDE team to make the links clickable. This also seems to make them clickable in terminals as well which is nice.

[codecov]

Codecov Report

Merging #6295 (5c0b214) into main (b50faea) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #6295   +/-   ##
=======================================
  Coverage   70.79%   70.80%           
=======================================
  Files         494      494           
  Lines       22331    22331           
=======================================
+ Hits        15809    15811    +2     
+ Misses       5502     5501    -1     
+ Partials     1020     1019    -1     

Impacted Files	Coverage Δ
...g/skaffold/kubernetes/portforward/entry_manager.go	91.78% <100.00%> (ø)
pkg/skaffold/docker/parse.go	87.39% <0.00%> (-0.85%)	⬇️
pkg/skaffold/util/tar.go	57.47% <0.00%> (+4.59%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b50faea...5c0b214. Read the comment docs.