docs: Add COPYRIGHT.txt

Ensure the project has a clear copyright statement, and note that some code may be copyright the Tusky project, used under license.
pachli · Sep 1, 2023 · c975a91 · c975a91
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commit c975a91
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
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+Copyright (C) 2023 Pachli Association, <https://pachli.app/>,
+made available under the GNU General Public License version 3.0.
+
+See LICENSE.txt for the full text of the GPL 3.0.
+
+Portions of this software are derived from the Tusky project,
+<https://www.tusky.app/>, also licensed under the GPL 3.0.