Docs: Add Issue & Pull Request Templates #46

[AnuditSInha]

Summary

Added Issue Templates and Pull Request Template Markdown files to keep all Vault repositories consistent

Linked issue - Not Applicable

Closes # - 46

How to test - Not Applicable

Notes / Risk - None

[DenizAltunkapan]

@AnuditSInha
Thanks for the contribution... and sorry for the confusion.

We already maintain minimalistic, clean PR and issue templates in the organization-wide repository:
https://github.com/Vault-Web/.github/tree/main/.github

These templates are intentionally kept lightweight, with fewer emojis and less verbosity to ensure consistency across all repositories.

Because organization-level templates are automatically applied repository-wide, we generally avoid duplicating or overriding them locally.

If you'd like to propose improvements or additional templates, please open a PR directly in the .github repository of the organization. Going forward, templates should remain minimalistic, emoji-free, and professionally styled to stay aligned with the existing standard.