chore(license): add rollkit license. (#1316)

## Summary by CodeRabbit

- **Documentation**
	- Updated licensing terms to grant additional rights for using Polaris software with Rollkit for blockchain rollup activities, including modification and distribution under specific conditions.

license/rollkit.md

@@ -0,0 +1,25 @@
+Any individual or organization (each, a “User”) using Strange Loop Labs AG’s (together with its
+subsidiaries and affiliates, "Strange Loop") application blockchain interface platform and
+services (“Rollkit”) is granted an additional use grant to allow such User to use the Polaris
+software code (which is generally made available at https://github.com/berachain/polaris (the
+"Polaris Code") together with Rollkit in accordance with the terms and conditions of this
+Additional License (as defined below). As part of this additional use grant, Licensor hereby
+grants such User a worldwide, irrevocable, perpetual, royalty-free, non-transferable and non-
+sublicensable (in each case other than as permitted under this Additional License) right and
+license to use, copy, modify, reproduce, distribute, make production use of, and create, use,
+copy, modify, reproduce, distribute, make production use of and otherwise exploit derivative
+works of the Polaris Code for the purposes of: creating, distributing, integrating, compiling, and
+deploying blockchain rollups via Rollkit and to modify and update Rollkit over time (the
+“Additional License”). The Additional License may be sublicensed through multiple tiers to any
+User that (a) uses Rollkit or a platform, blockchain or other service developed with or integrating
+Rollkit (“Rollkit Developed Platforms”), (b) uses any platform, blockchain or other service
+developed using a Rollkit Developed Platform, directly or indirectly or (c) is a service provider,
+subcontractor or consultant to any User referenced in clauses (a) or (b). Any use of the Polaris
+Code in material violation of the terms of this Additional License by a User will terminate such
+User’s rights under the Additional License and all other versions of the Polaris Code if such User
+fails to cure such violation within thirty (30) days written notice thereof from Licensor.
+Capitalized terms used and not otherwise defined herein shall have the meanings given to such
+terms in the Business Source License 1.1 generally made available at
+https://github.com/berachain/polaris/blob/main/eth/LICENSE. For the avoidance of doubt, this
+Additional License shall survive the Change Date and the license rights granted to such User
+after the Change Date shall not be changed or modified from the Change Date.