textures: add 8-row freetonia textures

These are 8-row versions of the Freedoom/Plutonia brick textures.

lumps/textures/textures.cfg

@@ -3465,6 +3465,26 @@ CEILVINE        128     128
 CGRATE1         128     128
 *   CGRATE1     0       0
 
+; 8-row Freetonia textures
+A-BRBK8         128     128
+*   BRBRICK8    0       0
+A-BRBK28        128     128
+*   BRBRIK28    0       0
+A-PBRIK8        128     128
+*   PBRICK8     0       0
+A-PBRK18        128     128
+*   PBRICK18    0       0
+A-PBRK28        128     128
+*   PBRICK28    0       0
+A-BROK28        128     128
+*   BROCK28     0       0
+A-DBRI18        128     128
+*   DIRBRI18    0       0
+A-DBRI28        128     128
+*   DIRBRI28    0       0
+A-MOSBK8        128     128
+*   MOSSBRK8    0       0
+
 ; These textures are only in FreeDM
 
 #ifdef FREEDM