Add quick-translate Package to translate between many languages using translate-shell

[p0ly60n]

This expansion uses the translate-shell CLI-tool to do in-line translations from and to many languages. The default source and target languages of the user can be defined within defaultlang.yml as this file serves as the global variable definition of them

[smeech]

A fairly straightforward package.
Makes use of an external command, trans, available from GitHub. I'm not in a position to verify its safety. This is called by two type: shell cmd:s.

Linux & macOS users need to be advised in README.md to change the two shell: wsl lines to shell: bash, and this could be facilitated by setting a global variable in defaultlang.yml, e.g.:

  - name: shell
    type: echo
    params:
      echo: bash # or wsl  

and changing the lines in package.yml to shell: "{{shell}}", so that defaultlang.yml is the only file needing editing by users.

Probably safe to merge.

Edit: Ignore most of my comments above - @p0ly60n has pointed out (and I have checked) that if WSL isn't present then Linux & macOS will use the default shell automatically, so Espanso will effectively ignore the line.

[smeech]

Merging this.
No security concerns beyond the use of an external package, which appears very stable with no security concerns in its own Issues.