refactor: move iostreams to own separate package

[profclems]

• Move iostreams to own separate package
• Fix references to iostream package
• Add StartSpinner and StopSpinner methods

[codecov]

Codecov Report

Merging #593 (42930fd) into trunk (a086fdd) will increase coverage by 6.07%.
The diff coverage is 73.45%.

@@            Coverage Diff             @@
##            trunk     #593      +/-   ##
==========================================
+ Coverage   54.64%   60.71%   +6.07%     
==========================================
  Files         103       90      -13     
  Lines        6980     6315     -665     
==========================================
+ Hits         3814     3834      +20     
+ Misses       2804     2120     -684     
+ Partials      362      361       -1     

Impacted Files	Coverage Δ
commands/alias/list/alias_list.go	80.00% <ø> (ø)
commands/api/api.go	76.17% <ø> (ø)
commands/api/http.go	77.55% <ø> (ø)
commands/ci/trace/trace.go	73.23% <ø> (ø)
commands/ci/view/view.go	47.22% <ø> (ø)
commands/cmdutils/cmdutils.go	73.68% <ø> (ø)
commands/cmdutils/factory.go	0.00% <ø> (ø)
commands/cmdutils/remote_resolver.go	54.54% <ø> (ø)
commands/completion/completion.go	100.00% <ø> (ø)
commands/config/config.go	37.93% <0.00%> (ø)
... and 49 more

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