Add remaining features for 3.17 support

[tombh]

Thanks to @alcarney we've identified the remaining features we need to add for complete LSP 3.17 compliance.

New methods:

• Add support for type hierarchies. #370
• Add support for inline values. #369
• Add support for inlay hints. #342
• Add support for workspace symbol resolve request. #362
• Add support for diagnostic pull model. #360

Other:

• Add support for notebook documents. #356
  See also, #311
• Add support to negotiate the position encoding.
  Some minor discussion here #304 (comment)