UI/UX Enhancements

[meganrenae21]

• [ ] Create UI/UX enhancements branch
• [ ] Update to Bootstrap 5 - see Online Mode project card
• [ ] Add theming options to options menu
• [ ] Add section in main screen that displays information about the current card (tags, lists, card title, etc)
• [ ] Make the "View Cards" table filterable and sortable
• [ ] Default "View Cards" sort by date last opened or date last updated
• [ ] Create a tag index to view all tags and to view cards by tag
• [ ] Update readme
• [ ] Create PR and merge with dist branch