Rewrite Edit Config UI and Cleanup UI

[timmo001]

Description

Rewrites config UI to integrate with main UI, instead of using a dynamically created form dialog.

Also rewrites a lot of the UI.

Related issues this fixes

Fixes: #195
Fixes: #218
Fixes: #225
Fixes: #226
Fixes: #227

Todo

• Make all cards clickable when editing
• Add / Edit pages setup
• Add / Edit cards setup
• Get pages to add and save
• Get cards to add and save
• Config should only change on save
• Fix / handle config ui slow loading
• Add a card with a + symbol on each group
• Fix config change on edit card
• Update card on save
• Add a way to delete
• Add a way to add groups
• Add config for themes
• Add config for header
• Fix nested object in cards for custom sizes
• Move card preview to left for larger screens
• Find out where null array items are being generated. Perhaps add a cleanup to configChange
• Delete cards in deleted page and move groups to new page. Either this or rework the pages to use names instead (dropdown in config). This would require migration or a release note, but would fix Page assignment - To add to page 1 you need to assign to page 2  #226.
• Check all previews work
• Cleanup all debugs and useless comments
• Documentation updated

Future Additions (Create issues after merge)

• Add a way to reorder pages
• Add a way to reorder groups
• Add a way to reorder cards
• Built-in JSON editor
• Get entities for hass cards in the editor (autosuggestions)
• Validation

Checklist

• Change has been tested and works on my device(s).
• Linters have been run.
• I am ready to merge.

[ghost]

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