Move lsp server to this repo (#5619)

rust/kcl-language-server/client/src/lsp_ext.ts

@@ -0,0 +1,24 @@
+/* eslint suggest-no-throw/suggest-no-throw: 0 */
+import * as lc from 'vscode-languageclient'
+
+export type CommandLink = {
+  /**
+   * A tooltip for the command, when represented in the UI.
+   */
+  tooltip?: string
+} & lc.Command
+export type CommandLinkGroup = {
+  title?: string
+  commands: CommandLink[]
+}
+
+// experimental extensions
+
+export const serverStatus = new lc.NotificationType<ServerStatusParams>(
+  'experimental/serverStatus'
+)
+export type ServerStatusParams = {
+  health: 'ok' | 'warning' | 'error'
+  quiescent: boolean
+  message?: string
+}