[FEATURE]: Bulk actions for sharing, moving, deleting, tagging etc.

[marius-wieschollek]

⚠️ This issue respects the following points: ⚠️

• [X] This is a feature request for one feature, not a question, discussion or multiple features.
• [X] This is not a feature request for the browser extension or another client.
• [X] This feature is not already requested on Github (I've searched it).
• [X] This feature does not already exist (I checked the wiki).

Current Status

When a user wants to do the same action with multiple passwords/folders/tags, the user must repeat that same operation for each individual item. This is very tedious, especially when a lot of passwords are involved. There should be a similar functionality to the files app where multiple - or all currently visible - items can be selected and an action can be done for all of them.

Feature Description

1. I open the app
2. I select multiple passwords/tags/folders trough a checkbox before each entry in the list
   • Alternatively i can select a "select all" checkbox in the list header
3. I can see a "⋯ Actions" button in the list header which allows me to select an action to perform on all selected items
   • Alternatively i can move all selected passwords & folders by dragging and dropping them into a folder

Additional Context

Replaces #136, #215, #268

[shie1]

I'm really eager for this feature to be added, as I'm hoping to use the app for password sharing. Manually selecting each password is incredibly cumbersome and inefficient.