Custom config dir/files support does not initialize on IDE startup or opening project

[evie-lau]

Problem

Support for custom config dir/files doesn't work on IDE startup or opening a new project
Currently it only triggers when running mvn liberty:create or gradle libertyCreate, or if the liberty-plugin-config.xml file gets modified after opening the project in the IDE.

Cause

This is because our current version of lsp4ij does not support initializing LSP workspaces. intellij-quarkus has already added this support in a newer version of lsp4ij.

Solution

Either

• Bring our version of lsp4ij up to date with intellij-quarkus to support workspaces.
• Wait for the common lsp4ij component and switch over to that.

Note: these should also remove the need for the filewatcher introduced in #510, as there will be support for LSP's workspace/didChangeWatchedFiles

[turkeylurkey]

The first init msg has

"workspaceFolders": [
    {
      "uri": "file:///Users/turk/demo/guide-getting-started/",
      "name": "guide-getting-started"
    }

[turkeylurkey]

Fixed by using the latest lsp4ij as tracked by #592.