add source port text graphics (#1473)

buildcfg.txt

@@ -871,6 +871,8 @@ M_VIDEO		0	1
 M_WAD		0	1
 M_WADOPT	0	1
 M_CRISPY	0	1
+M_LVLTBL	0	1
+M_CSTSKL	0	1
 
 BRDR_TL	-5	-5
 BRDR_T	0	-5

graphics/text/Makefile

@@ -16,7 +16,7 @@ TEXTGEN_GRAPHIC_LUMPS = \
   m_mess.png   m_mouse.png  m_multi.png  m_player.png m_serial.png \
   m_setup.png  m_sound.png  m_stat.png   m_status.png m_tcpip.png  \
   m_versen.png m_video.png  m_wad.png    m_wadopt.png m_weap.png   \
-  m_crispy.png                                                     \
+  m_crispy.png m_lvltbl.png m_cstskl.png                           \
   prboom.png   t_phase1.png t_phase2.png                           \
   m_ultra.png  wibp1.png    wibp2.png    wibp3.png    wibp4.png    \
   wicolon.png  wienter.png  wif.png      wifrgs.png   wipcnt.png   \

graphics/text/config.py

@@ -236,6 +236,10 @@ red_graphics = {
     "m_multi": "Multiplayer",
     # Crispy Doom's Crispness menu:
     "m_crispy": "Crispness",
+    # DSDA's Level Table
+    "m_lvltbl": "Level Table",
+    # Nugget's Custom Skill
+    "m_cstskl": "Custom Skill...",
 }