refactor(app): use vscode-material-icons package

Author: matejchalk

.github/workflows/publish.yml

@@ -16,6 +16,7 @@ jobs:
         with:
           registry-url: 'https://registry.npmjs.org'
           scope: '@rx-angular'
+          node-version-file: .tool-versions
       - name: Install dependencies
         run: npm ci
       - name: Publish to NPM
@@ -33,6 +34,7 @@ jobs:
         with:
           registry-url: 'https://npm.pkg.github.com'
           scope: '@rx-angular'
+          node-version-file: .tool-versions
       - name: Install dependencies
         run: npm ci
       - name: Publish to GPR

.tool-versions

@@ -0,0 +1 @@
+nodejs 16.15.1

README.md

@@ -90,5 +90,5 @@ npm start
 If you need to update icons and mappings from [VSCode Material Icon Theme](https://github.com/PKief/vscode-material-icon-theme), run:
 
 ```sh
-npm run fetch-icons
+npm i vscode-material-icons@latest
 ```