[WIP] Filter sidebar

[WithoutPants]

This is a less ambitious (see #4453) attempt at adding a filter sidebar to the scenes page.

Currently includes:

• saved filters - save/set as default functionality moved here
• performers
• studios
• tags

I intend to include rating and organised options in this PR.

Replaces the Saved Filter dropdown button with a sidebar toggle button.

This is currently WIP. PR is so that people can try out the build.

[MinasukiHikimuna]

What do you think: could the expanded/collapsed state be saved? Now if I have specific tags and performers selected, open a scene and come back scenes list view, all the options are collapsed with no visual indication which of those have some options set.

Proficient Stash users can determine the options from the standard filtering options though.

[WithoutPants]

New updates from yesterday:

• sidebar now sits overlapping the content pane on smaller viewports. Adds a close button on these viewports and will automatically close the sidebar when clicking outside the sidebar.
• selected items now always show under the heading, instead of being hidden behind the collapse.

What do you think: could the expanded/collapsed state be saved? Now if I have specific tags and performers selected, open a scene and come back scenes list view, all the options are collapsed with no visual indication which of those have some options set.

Saving sidebar state in the browser is at the top of my todo list.

[echo6ix]

Placement of sidebar toggle and sidebar specific buttons

@WithoutPants are you open to taking inspiration from ChatGPT's sidebar UI/UX? Specifically the placement of the toggle and other relevant primary buttons, which are placed at the top

• Toggle button is fixed (top right), regardless of sidebar being enabled or disabled
• Fixed toggle button allows for notification badge for sidebar specific items (as per animation). Stash may not have a use for that now, but the possibility is there for the future.
• Top of the sidebar (left justified) is a good potential placement for other fundamental buttons

[MinasukiHikimuna]

What is the plan for this feature? Will it be merged to develop now that 0.28 has been released?

I'm already used to rely on this so I cannot imagine using Stash without it. Great work on this!