Add the REM interface generators (tools) and ignore dumps, logs and server files

make_icon_3db, make_image_3db and make_hud_txm with their helpers, standalone
(the name CRC table is in flcrc.py). The .gitignore keeps crash dumps, logs,
traces, debug symbols and everything of the server out of the mod.

.gitignore

@@ -6,4 +6,23 @@ SAVE/PerfOptions.ini
 SAVE/WindowSettings.ini
 SAVE/Accts/SinglePlayer/Restart.fl
 SAVE/Accts/SinglePlayer/AutoSave.fl
-SAVE/Accts/SinglePlayer/nostory.fl
+SAVE/Accts/SinglePlayer/nostory.fl
+
+# crash dumps, logs, traces, debug symbols, build leftovers
+*.dmp
+*.log
+*.trace
+*.pdb
+*.obj
+*.bak
+EXE/codec-samples.jsonl
+
+# the server is a private project, nothing of it goes into the mod
+EXE/rem-server*
+EXE/flserver_rebuilt.*
+EXE/flbot.exe
+EXE/LargeID.dat
+EXE/REM/ServerModule/
+EXE/REM/npc_profiles.ini
+EXE/REM/rem-server-*.txt
+flserver-reconstruction/