Autocompletion for model classes

[brynrhodes]

As a CQL author, I want the editor to automatically suggest model classes when I'm authoring a retrieve. For example:

define RetrieveFoo: [ // auto-suggest model types here based on currently accessible using declarations

Could potentially auto-suggest known models based on registered model providers too, if no using declarations are available (another story?)

[JPercival]

In CQL the Model information is provided by a ModelInfo. The CQL compiler loads these via the ModelManager. You'd check to see if you were a context of accessing a Model, and then populate options from the list

[JPercival]

Relevant LSP specification:
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#textDocument_completion