feat(lsp): notify list_or_jump when no results

[AckslD]

Description

This adds notifications when no results are found for LSP references/definitions etc. Similarly to the existing notification for lsp_document_symbols.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

I tried lsp_references on things that had results and things that didn't and saw the correct notification.

Configuration:

• Neovim version (nvim --version): 0.10.0
• Operating system and version: arch linux

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)

[jamestrew]

thanks!