refactor(remote/pinning): Ls to take results channel instead of returning one

[gammazero]

This PR creates a new client Ls API that takes a write-only results channel instead of returns one. This is needed by ipfs/kubo#10527

The original Ls behavior is implemented by the GoLs function, which creates the channels, starts the goroutine that calls Ls, and returns the channels to the caller.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 47 lines in your changes missing coverage. Please review.

Project coverage is 60.44%. Comparing base (984fa89) to head (e77b447).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
pinning/remote/client/client.go	0.00%	47 Missing ⚠️

@@            Coverage Diff             @@
##             main     #738      +/-   ##
==========================================
+ Coverage   60.34%   60.44%   +0.10%     
==========================================
  Files         244      244              
  Lines       31029    31027       -2     
==========================================
+ Hits        18723    18753      +30     
+ Misses      10634    10606      -28     
+ Partials     1672     1668       -4     

Files with missing lines	Coverage Δ
pinning/remote/client/client.go	0.00% <0.00%> (ø)

... and 13 files with indirect coverage changes

[lidel]

Thank you, I'm merging and bubbling up to ipfs/kubo#10527, will include this in Kubo 0.33.0-rc1