Automatically open QMD files in visual/source editor if specified (#577)

* auto open in default or specified viewer

* clean up for clarity

* use onDidChangeActiveTextEditor

* Apply suggestions from code review

Co-authored-by: Davis Vaughan <davis@posit.co>

* changes from review

* move listener to VisualEditorProvider

* only have one editor listener

* check if this is a diff

* track editor associations

* fix typing error

* update from review

* move everything to Tab API

* clean up unused code

* linting

* only watch opened tabs

* preserve focus on tab swaps

* Apply suggestions from code review

Co-authored-by: Davis Vaughan <davis@posit.co>

* add comments

---------

Co-authored-by: Davis Vaughan <davis@posit.co>

apps/vscode/package.json

@@ -1383,7 +1383,7 @@
     "@types/semver": "^7.3.13",
     "@types/tmp": "^0.2.3",
     "@types/uuid": "^9.0.0",
-    "@types/vscode": "1.66.0",
+    "@types/vscode": "1.75.0",
     "@types/which": "^2.0.2",
     "@typescript-eslint/eslint-plugin": "^5.45.0",
     "@typescript-eslint/parser": "^5.45.0",

apps/vscode/src/main.ts

@@ -24,7 +24,6 @@ import { activateQuartoAssistPanel } from "./providers/assist/panel";
 import { activateCommon } from "./extension";
 import { activatePreview } from "./providers/preview/preview";
 import { activateRender } from "./providers/render";
-import { initQuartoContext, quartoContextUnavailable } from "quarto-core";
 import { activateStatusBar } from "./providers/statusbar";
 import { walkthroughCommands } from "./providers/walkthrough";
 import { activateLuaTypes } from "./providers/lua-types";
@@ -33,11 +32,12 @@ import { activateEditor } from "./providers/editor/editor";
 import { activateCopyFiles } from "./providers/copyfiles";
 import { activateZotero } from "./providers/zotero/zotero";;
 import { extensionHost } from "./host";
+import { initQuartoContext } from "quarto-core";
 import { configuredQuartoPath } from "./core/quarto";
 import { activateDenoConfig } from "./providers/deno-config";
 
 export async function activate(context: vscode.ExtensionContext) {
- 
+
   // create extension host
   const host = extensionHost();
 
@@ -129,5 +129,5 @@ export async function activate(context: vscode.ExtensionContext) {
 
 export async function deactivate() {
   return deactivateLsp();
-} 
+}