chore: update editorconfig and add .prettierrc for code formatting

.prettierrc

@@ -0,0 +1,37 @@
+{
+  "singleQuote": true,
+  "semi": true,
+  "trailingComma": "all",
+  "tabWidth": 2,
+  "bracketSpacing": true,
+  "printWidth": 80,
+  "endOfLine": "crlf",
+  "arrowParens": "always",
+  "quoteProps": "consistent",
+  "overrides": [
+    {
+      "files": "*.html",
+      "options": {
+        "parser": "html"
+      }
+    },
+    {
+      "files": "*.component.html",
+      "options": {
+        "parser": "angular"
+      }
+    },
+    {
+      "files": "*.scss",
+      "options": {
+        "singleQuote": false
+      }
+    },
+    {
+      "files": "*.json",
+      "options": {
+        "printWidth": 80
+      }
+    }
+  ]
+}