Add minimal vscode settings and extensions (#1109)

* chore: add minimal vscode settings and extensions

* chore: Add "files.trimTrailingWhitespace" to vscode native config

* chore: replace vscode prettier plugin with eslint plugin

.vscode/extensions.json

+{
+  // See https://go.microsoft.com/fwlink/?LinkId=827846 to learn about workspace recommendations.
+  // Extension identifier format: ${publisher}.${name}. Example: vscode.csharp
+
+  // List of extensions which should be recommended for users of this workspace.
+  "recommendations": [
+    "dbaeumer.vscode-eslint",
+    "editorconfig.editorconfig",
+    "juanblanco.solidity",
+    "golang.go",
+  ],
+}

.vscode/settings.json

+{
+  "editor.formatOnSave": true,
+  "[typescript]": {
+    "editor.defaultFormatter": "dbaeumer.vscode-eslint",
+    "editor.formatOnSave": true,
+  },
+  "eslint.nodePath": "./node_modules/eslint/bin/",
+  "eslint.format.enable": true,
+  "editorconfig.generateAuto": false,
+  "files.trimTrailingWhitespace": true,
+}