Config builder - PR #1411

[LlGC-mag]

Create a tool to list all config options and easily allow the user to update the config with a UI rather than cut/paste

https://github.com/UniversalViewer/universalviewer/pull/1411

• [x] Create accordion component listing all options set by default config
• [x] Add reset to default config and remove stored user data button
• [x] List config in alphabetical order
• [x] Add option to change and reload config to reflect changes
• [x] Add/remove options in custom config textarea as options are changed so it can be cut/pasted
• [x] Test all config functions work as expected
• [ ] Link to Saira's documentation
• [ ] Tidy code / update to TS from JS where applicable

[LlGC-mag]

Possible future addition - search box to filter config options