Create LICENSE

LICENSE

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+Copyright (C) 2022-2024 by SDR-Enthusiasts, Ramon F. Kolb (kx1t), and contributors
+A list of contributurs can be found at <https://github.com/sdr-enthusiasts/plane-alert-db/graphs/contributors>
+
+This {DATA(BASE)-NAME} is made available under the Open Database License: http:https://opendatacommons.org/licenses/odbl/1.0/.
+Any rights in individual contents of the database are licensed under the Database Contents License: http:https://opendatacommons.org/licenses/dbcl/1.0/
+
+License terms cannot be altered without the prior permission in writing of a majority of the SDR-Enthusiasts Github Organization.