[OneDiscover] Contextual data presentation & extension points

[kertal]

This is an issue to track work on implementing Contextual data presentation in Discover.

On a high level this means:

• Remove existing Discover customization profile system
• Implementing a new Discover URL structure:
  • Migrate URL format to one which supports various data sources
  • Update the application URL state in Discover to work with the new URL structure
  • Redirect legacy Discover URLs to the new URL structure
• Implement Contextual awareness architecture
• Implement data source context resolution
• Implement document context resolution
• Implement extension points

### Contextual data presentation
- [ ] https://github.com/elastic/kibana/issues/181355
- [ ] https://github.com/elastic/kibana/issues/181962
- [ ] https://github.com/elastic/kibana/issues/181963
- [ ] https://github.com/elastic/kibana/issues/182106
- [ ] https://github.com/elastic/kibana/issues/182105
- [ ] https://github.com/elastic/kibana/issues/184698
- [ ] https://github.com/elastic/kibana/issues/184080
- [ ] https://github.com/elastic/kibana/issues/184601
- [ ] https://github.com/elastic/kibana/issues/184699

### Extension points
- [ ] https://github.com/elastic/kibana/issues/184084

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)