add prettier for auto formatting (#231)

* [Prettier] Add "prettier"

Makes the formatting of the code consistent.
By using the eslint-plugin-prettier formatting issues will be highlighted as a lint error.
These errors will be auto fixed by running "lint --fix" (which can be done automatically on file save)

* [Prettier] Add "prettier" - Fix formatting

src/components/util/helpers.ts

@@ -6,14 +6,14 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 // eslint-disable-next-line import/prefer-default-export
-export const pluralize = (count: number, input: string | { one: string, many: string }) => {
+export const pluralize = (count: number, input: string | { one: string; many: string }) => {
     if (typeof input === 'string') {
         return `${input}${count === 1 ? '' : 's'}`;
     }
     return input[count === 1 ? 'one' : 'many'];
 };
 
-export const interpolate = (count: number, input: { one: string, many: string }) => {
+export const interpolate = (count: number, input: { one: string; many: string }) => {
     const text = count === 1 ? input.one : input.many;
     return text.replaceAll('%count%', count.toString());
 };