[galleries] hidden collections still show up when creating gallery

Summary

• MyGalleryCollectionController has been updated and it now checks if showHidden is in request and it will filter the hidden collections for the user.
• useGalleryNfts hook has been updated. It now passes showHidden to the BE.
• Typing for methods in GalleryNftsState has been updated. They now support showHidden as a param.
• NftHiddenCollectionsToggle component has been created. It displays the switch input and its label, according to the UI. It supports light and dark modes, and also mobile version has been added.
• Unit tests for the implemented components have been updated.
• New translations for the implemented texts.

Steps to reproduce

1. Run the app in local or testing_e2e mode.
2. Make sure your testing wallet has at least 2 NFTs from different collections.
3. Go to /collections page and hide some collections.
4. Click on Create a gallery button.
5. Now, try to add some NFTs for your gallery.
6. Toggle on the Show hidden collections switch and see the magic ✨

Screenshots

1. Create a Gallery button in My galleries page, when having at least 1 created gallery and all your collections hidden.

2. Placeholder message when having 0 galleries and all your collections hidden.

Checklist

• I checked my UI changes against the design and there are no notable differences
• I checked my UI changes for any responsiveness issues
• I checked my (code) changes for obvious issues, debug statements and commented code
• I opened a corresponding card on Clickup for any remaining TODOs in my code
• I added a short description on how to test this PR (if necessary)
• I added a storybook entry for the component that was added (if necessary)
• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged