Add the GNU General Public License v3 to the project to ensure
that the software remains free and open-source, protecting users'
freedom to share and change the software.

docs(license): add detailed terms and conditions for object code conveyance and additional permissions

Add comprehensive terms for conveying object code, user products, and
installation information. Include guidelines for additional permissions,
termination, acceptance, automatic licensing, and patent-related clauses.

docs: add full text of GNU General Public License v3

Include detailed terms and conditions of the GNU GPL v3 to ensure
compliance and provide clear guidelines for users and developers.