Copy useSearch() into kolibri-common as baseUseSearch()

[marcellamaki]

The useSearch() composable in Learn will be abstracted into kolibri-common so that it can be used across plugins. (At this point, Learn and Coach, but possibly also Device in the future!)

The core functionality should be moved into a composable called baseUseSearch that can be used across plugins.

In a future issue, additional requirements for particular uses (i.e. contentNodeProgress and currentDeviceData in Learn) will be handled within those plugins, via dependency injection.

Acceptance Criteria

1. Moves useSearch into kolibri-common as useBaseSearch()
2. Moves useLanguages into kolibri-common
3. Ensure no console errors, and that build works correctly, even though this issue does not include refactoring in Learn