Wr/bin aliases

[WillieRuemmele]

@W-13104211@

adds to scripts to alias the binAliases to the bins
adds bash script UT

testing helpful tips:
bash:
complete -r will turn off autocomplete for that session, double check it's not enabled for both CLI before testing

zsh:
delete the sf/sfdx paths in $fpath variable, delete the directories in ~/Library/caches/sf(dx)/autocomplete, double check autocomplete isn't working for both cli

[cristiand391]

QA notes:

previous steps:

# delete old autocomplete files for sf and sfdx:
rm -rf /Users/cdominguez/Library/Caches/sfdx/autocomplete/
rm -rf /Users/cdominguez/Library/Caches/sf/autocomplete

# use sf v2 with `sfdx` alias:
sf -v
@salesforce/cli/2.0.0-beta.43 darwin-x64 node-v18.12.1

# generete completion files
sf autocomplete

# reload shells/terminal

bin aliases zsh, bash & powershell (tested on macos)

✅ works for sf and sfdx, complete all sub-args and flags correctly

generate valid completion files for CLI without bin aliases

✅ all comp. functions still work on all shells

[cristiand391]

QA notes:

pwsh (macos)

✅ completion is registered for both sf and sfdx correctly
✅ CLI without binAliases still get valid completion file.