Add the select all collection checkbox on the git import

[ntsd]

I have checked the following:

• I've searched existing issues and found nothing related to my issue.

This feature

• blocks me from using Bruno
• would improve my quality of life in Bruno
• is something I've never seen an API client do before

Describe the feature you want to add, and how it would change your usage of Bruno

Relate to this PR #7405,

I was importing around ~30 collections from the Git repo and struggled to check the box one by one.
I think this feature will be useful for people who store all their collections as a monorepo.

Mockups or Images of the feature

[coderabbitai]

⚠️ Possible Duplicate Issue(s)

• When importing from a git repo, I want the option to 'Select All' collections #6015

🔗 Related PRs

#6944 - feat: add reveal in file manager option to workspace collections menu [merged]
#7085 - feat: validate ZIP file format for collections before import [merged]
#7328 - feat: add collection creation flow in SaveTransientRequest modal [merged]
#7394 - fix: update collection path handling to use path.join for consistency [merged]

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