add option to open in new window by default

[Neotamandua]

• Resolves Add an option to open groups in a new window as default #1133 & open tabgroup in new window #865

[krishhthedev]

I am eager to see this commit merged. I waiting for this option for a long time.

[krishhthedev]

@Drive4ik Hope, you can review & approve this change soon.

[krishhthedev]

@Neotamandua You should assign this PR to the author.

[Neotamandua]

You should assign this PR to the author.

I do not have permission to add reviewers for this repository here

[ncflagg]

@Neotamandua can you give some basic instructions how to install this from your repo (https://github.com/Neotamandua/simple-tab-groups/tree/neotamandua/open_groups_in_new_window_by_default)?

I see there are some npm commands in the original repo, but sure what else is required. The file structure of the repo doesn't seem to match other .xpi files I've opened.

[Neotamandua]

@ncflagg I don't know how to install extensions based on source code by heart. This is my first PR on this repository, and I added the feature expecting it to be merged earlier

[jonathanLindquist]

I'm also excited to see this merged