feat(files_sharing): provide web components based API for sidebar

[susnux]

• Based on fix(workflowengine): require a web component as operation plugin #50783
• For "Limit downloads" button is not clickable files_downloadlimit#514
  • Library companion: feat: provide API to register sidebar sections nextcloud-libraries/nextcloud-sharing#95
  • Files download limit: feat: migrate to web components API files_downloadlimit#515

Summary

We need to provide an API that does not rely on Vue.
As Vue components must not be shared between different apps.

Checklist

• Code is properly formatted
• Sign-off message is added to all commits
• Tests (unit, integration, api and/or acceptance) are included
• Screenshots before/after for front-end changes
• Documentation (manuals or wiki) has been updated or is not required
• Backports requested where applicable (ex: critical bugfixes)

[susnux]

/backport to stable32

[susnux]

/backport to stable31

[CarlSchwan]

/compile rebase

[backportbot]

The backport to stable31 failed. Please do this backport manually.

# Switch to the target branch and update it
git checkout stable31
git pull origin stable31

# Create the new backport branch
git checkout -b backport/54788/stable31

# Cherry pick the change from the commit sha1 of the change against the default branch
# This might cause conflicts, resolve them
git cherry-pick 931247f9 c5a093d8 ee962f3a 41a46c59

# Push the cherry pick commit to the remote repository and open a pull request
git push origin backport/54788/stable31

Error: Failed to push branch backport/54788/stable31: remote: {"auth_status":"auth_error","body":"Invalid username or token. Password authentication is not supported for Git operations."}
fatal: Authentication failed for 'https://github.com/nextcloud/server.git/'

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Learn more about backports at https://docs.nextcloud.com/server/stable/go.php?to=developer-backports.