TUTORIAL: add boilerplate SLUDGE project

script.slu

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+sub init () {
+	addOverlay ('image.tga', 0, 0);
+}

tutorial.slp

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+[SETTINGS]
+windowname=New SLUDGE Game
+finalfile=Gamedata
+language=English
+datafolder=save
+quitmessage=Are you sure you want to quit?
+customicon=
+customlogo=
+mouse=2
+fullscreen=Y
+makesilent=N
+showlogo=Y
+showloading=Y
+invisible=N
+ditherimages=Y
+width=640
+height=480
+speed=20
+chrRender_def_enabled=Y
+chrRender_def_softX=4
+chrRender_def_softY=4
+chrRender_max_enabled=Y
+chrRender_max_readIni=Y
+chrRender_max_softX=100
+chrRender_max_softY=100
+
+[FILES]
+script.slu