Issue/4 add format on save

VsCode will now correctly/format typescript code on save. ESLint will now work correctly.

.vscode/extensions.json

@@ -5,6 +5,7 @@
         "pranaygp.vscode-css-peek",
         "dbaeumer.vscode-eslint",
         "ms-vsliveshare.vsliveshare",
-        "cssho.vscode-svgviewer"
+        "cssho.vscode-svgviewer",
+        "esbenp.prettier-vscode"
     ]
 }
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