Add missing copyright headers to TSBK files

P25/lc/TSBKBase.cs

@@ -1,4 +1,18 @@
-using System;
+// SPDX-License-Identifier: AGPL-3.0-only
+/**
+* Digital Voice Modem - Fixed Network Equipment Core Library
+* AGPLv3 Open Source. Use is subject to license terms.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* @package DVM / Fixed Network Equipment Core Library
+* @license AGPLv3 License (https://opensource.org/licenses/AGPL-3.0)
+*
+*   Copyright (C) 2024 Bryan Biedenkapp, N2PLL
+*   Copyright (C) 2024 Caleb, K4PHP
+*
+*/
+
+using System;
 
 using fnecore.EDAC;
 

P25/lc/tsbk/IOSP_ACK_RSP.cs

@@ -1,4 +1,17 @@
-namespace fnecore.P25.LC.TSBK
+// SPDX-License-Identifier: AGPL-3.0-only
+/**
+* Digital Voice Modem - Fixed Network Equipment Core Library
+* AGPLv3 Open Source. Use is subject to license terms.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* @package DVM / Fixed Network Equipment Core Library
+* @license AGPLv3 License (https://opensource.org/licenses/AGPL-3.0)
+*
+*   Copyright (C) 2024 Caleb, K4PHP
+*
+*/
+
+namespace fnecore.P25.LC.TSBK
 {
     /// <summary>
     /// IOSP_ACK_RSP TSBK

P25/lc/tsbk/IOSP_CALL_ALRT.cs

@@ -1,4 +1,17 @@
-namespace fnecore.P25.LC.TSBK
+// SPDX-License-Identifier: AGPL-3.0-only
+/**
+* Digital Voice Modem - Fixed Network Equipment Core Library
+* AGPLv3 Open Source. Use is subject to license terms.
+* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+*
+* @package DVM / Fixed Network Equipment Core Library
+* @license AGPLv3 License (https://opensource.org/licenses/AGPL-3.0)
+*
+*   Copyright (C) 2024 Caleb, K4PHP
+*
+*/
+
+namespace fnecore.P25.LC.TSBK
 {
     /// <summary>
     /// IOSP_CALL_ALRT TSBK