chore: Added matrix build for AppVeyor

Author: edgardmessias

.appveyor.yml

@@ -2,6 +2,11 @@ environment:
   ELECTRON_NO_ATTACH_CONSOLE: 1
   VSCODE_BUILD_VERBOSE: true
 
+  matrix:
+    - CODE_VERSION: "1.20.0" # Minimal Version
+    - CODE_VERSION: "*" # Last Stable Version
+    - CODE_VERSION: "insiders" # Insider Version
+
 # platform:
 #   - x86
 #   - x64
@@ -27,7 +32,6 @@ build_script:
   # For coverage
   - ps: (get-content package.json) | %{$_ -replace '"\*"',''} | set-content package.json
 
-
 test_script:
   - npm test --silent