WIP - Source clojuredocs from clojure-lsp

Adding a command for testing how to get clojuredocs.
(Which can't be done yet, see:
clojure-lsp/clojure-lsp#598)
Addressing #689

package.json

@@ -1538,6 +1538,11 @@
                 "title": "Clojure-lsp Server Info",
                 "category": "Calva Diagnostics"
             },
+            {
+                "category": "Calva",
+                "command": "calva.clojuredocs",
+                "title": "Clojuredocs"
+            },
             {
                 "category": "Calva",
                 "command": "calva.toggleBetweenImplAndTest",

src/lsp/main.ts

@@ -332,8 +332,23 @@ function registerDiagnosticsCommands(context: vscode.ExtensionContext): void {
     context.subscriptions.push(vscode.commands.registerCommand('calva.diagnostics.openClojureLspLogFile', openLogFile));
 }
 
+async function clojuredocsCommandHandler(): Promise<void> {
+    const client = getStateValue(LSP_CLIENT_KEY);
+    if (client) {
+        const clojuredocs = await getClojuredocs(client);
+        const calvaSaysChannel = state.outputChannel();
+        calvaSaysChannel.appendLine(`Clojuredocs:`);
+        const clojuredocsPretty = JSON.stringify(clojuredocs, null, 2);
+        calvaSaysChannel.appendLine(clojuredocsPretty);
+        calvaSaysChannel.show(true);
+    } else {
+        vscode.window.showInformationMessage('There is no clojure-lsp server running.');
+    }
+}
+
 async function activate(context: vscode.ExtensionContext): Promise<void> {
     registerDiagnosticsCommands(context);
+    context.subscriptions.push(vscode.commands.registerCommand('calva.clojuredocs', clojuredocsCommandHandler));
     const extensionPath = context.extensionPath;
     const currentVersion = readVersionFile(extensionPath);
     const userConfiguredClojureLspPath = config.getConfig().clojureLspPath;
@@ -397,6 +412,13 @@ async function openLogFile(): Promise<void> {
     }
 }
 
+async function getClojuredocs(lspClient: LanguageClient): Promise<any> {
+    return lspClient.sendRequest('clojure/clojuredocs/raw', {
+        symName: 'pprint',
+        symNs: 'clojure.core'
+    });
+}
+
 export default {
     activate,
     deactivate,