build: Use prettier for javascript

Stop ignoring .js and .json files in prettier and fix existing issues.

The `prettier-plugin-multiline-arrays` plugin is used to split arrays
with multiple elements into one line per element.

version.js

@@ -4,15 +4,16 @@ const { writeFileSync } = require('fs-extra');
 const moment = require('moment');
 
 const gitInfo = gitDescribeSync({
-    dirtyMark: false,
-    dirtySemver: false
+  dirtyMark: false,
+  dirtySemver: false
 });
 
-gitInfo.version = moment().format('YYMMDD');;
+gitInfo.version = moment().format('YYMMDD');
 
 const file = resolve(__dirname, '.', 'src', 'environments', '.env.ts');
-writeFileSync(file,
-`// IMPORTANT: THIS FILE IS AUTO GENERATED! DO NOT MANUALLY EDIT OR CHECKIN!
+writeFileSync(
+  file,
+  `// IMPORTANT: THIS FILE IS AUTO GENERATED! DO NOT MANUALLY EDIT OR CHECKIN!
 /* tslint:disable */
 export default {
   'mifos_x': {
@@ -22,6 +23,8 @@ export default {
   'allow_switching_backend_instance': true
 };
 /* tslint:enable */
-`, { encoding: 'utf-8' });
+`,
+  { encoding: 'utf-8' }
+);
 
 console.log(`Wrote version info ${gitInfo.raw} to ${relative(resolve(__dirname, '..'), file)}`);