0.2.0-M12-multi-tenancy

What's Changed

• Add README.md for Helm chart by @LuLeRoemer in #108
• Create INSTALL.md by @LuLeRoemer in #109
• Rename documentation.md to README.md by @LuLeRoemer in #110
• Add .tractusx file by @LuLeRoemer in #111
• Add missing line at the end of the .tractusx file by @LuLeRoemer in #112
• Update CODE_OF_CONDUCT.md by @LuLeRoemer in #113
• Create new version v0.2.0-M12-multi-tenancy by @LuLeRoemer in #114

Full Changelog: v0.2.0-M11-multi-tenancy...v0.2.0-M12-multi-tenancy