Adding Linting and Formatting (#77)

Addresses #11 item "Linting/formatting (eg eslnt, prettier)":
* Adding eslint, prettier, and config targeting Google, typescript, and both nodejs and client builds
* Addressing linter-found issues
* Adding lint and lint:fix commands
* Adding documentation
* Renaming workflow and adding lint check
* Adding documentation about VSCode linting/formatting, ran formatting on a few files, set up exclude list for gatsby develop, setup build to fail on error

.github/workflows/build_deploy.yml

@@ -33,6 +33,8 @@ jobs:
         run: npm run build --if-present
       - name: Get directory contents
         run: ls -la public
+      - name: Lint
+        run: npm run lint
       - name: Test
         run: npm test
       - name: Upload Artifact