chore(.gitignore): add test.ts to the list of ignored files

fix(prepare-commit-msg-hook.ts): add missing await keyword to getStagedFiles() function call
feat(prepare-commit-msg-hook.ts): add spinner to indicate commit message generation progress
feat(utils/mergeDiffs.ts): add mergeDiffs function to merge array of strings into an array of strings with a maximum length
The test.ts file is now ignored by git. The missing await keyword has been added to the getStagedFiles() function call. A spinner has been added to indicate the progress of commit message generation. The mergeDiffs function has been added to merge an array of strings into an array of strings with a maximum length.

src/utils/mergeDiffs.ts

@@ -1,5 +1,5 @@
-import { tokenCount } from './tokenCount'
-export function mergeStrings(arr: string[], maxStringLength: number): string[] {
+import { tokenCount } from './tokenCount';
+export function mergeDiffs(arr: string[], maxStringLength: number): string[] {
   const mergedArr: string[] = [];
   let currentItem: string = arr[0];
   for (const item of arr.slice(1)) {