Add More Essential Letter Templates

[innovatewithkishlay]

Our goal is to build QuickPaper into a one-stop solution for all formal documentation needs — whether for students, professionals, or businesses.

We already have 20+ templates, but we aim to expand to 100+ high-quality templates.
This issue invites contributors to help add commonly needed and widely used letter templates,Each template should follow our existing structure using the Template type, including:

A unique ID, title, and category

A short description + glimpse

Proper field definitions

HTML-based template structure using

and
tags

No inline styles or complex formatting

Please refer to referenceLetter.ts or resignationLetter.ts as good examples.

Feel free to:

Add just one new template per PR

Suggest improvements to how fields are handled

Recommend other popular templates worth including

Let’s build QuickPaper into an all-in-one solution, together 💪