docs: create licensing metadata overview guide

[Rish-2006]

Description

This pull request creates a dedicated licensing metadata overview file to improve structural transparency for developers regarding open-source compliance tracking.

Related Issue

Closes #1898

Which package(s)?

website

Type of Change

• Documentation ('type:docs')

[github-actions]

✅ Auto-assigned to @Rish-2006 (issue opener).

Open your PR by 2026-07-07 (7 days). The bot frees this issue for another contributor after that date.

Reminders:

• ⭐ Star the repo first. The star-check job blocks your merge otherwise.
• PR title: type: short description
• Link this issue in your PR body: Closes #1899

Good luck. 🚀