Possibility to search across all repositories of the organization

[donhardman]

We need to add the ability to search across all the organization's repositories. This shouldn't trigger a reindexing of all repos, but it should enable searching through all the organization's data.

We'll need to modify the structure to make this happen and use the same interface we currently use for individual repositories. However, we'll add extra filters that will allow us to also filter by repositories within the organization.

[donhardman]

Implemented in this pull request: https://github.com/manticoresoftware/manticore-github-issue-search/pull/9

[donhardman]

We're closing this issue because the pull request has been merged. The deployment will coincide with the vector search release.