Fix SEGV crash: Initialize window and font in stateInit()

- Move window initialization and font loading to stateInit()
- Window now opens before splash screens (required for rendering)
- Custom font loaded in stateInit for splash screen use
- Remove RL.config() call from luaCallMain() (window already initialized)
- Remove stateContextInit() call (initialization now done in stateInit)
- Add hasWindow, customFontLoaded, resolution fields to State
- Fix memory management for custom font in stateFree()

This matches the ReiLua-JamVersion architecture where the window
is opened early so splash screens can render properly.

build/main.lua

@@ -0,0 +1,29 @@
+local textColor = RL.BLACK
+local textPos = { 192, 200 }
+local textSize = 20
+local text = "Congrats! You created your first window!"
+
+function RL.init()
+	RL.SetWindowTitle( "First window" )
+	RL.SetWindowState( RL.FLAG_VSYNC_HINT )
+end
+
+function RL.update( delta )
+	if RL.IsKeyPressed( RL.KEY_ENTER ) then
+		local winSize = RL.GetScreenSize()
+		local measuredSize = RL.MeasureTextEx( RL.GetFontDefault(), text, textSize, 2 )
+		
+		textColor = RL.BLUE
+		textPos = { winSize[1] / 2 - measuredSize[1] / 2, winSize[2] / 2 - measuredSize[2] / 2 }
+	end
+
+	if RL.IsKeyPressed( RL.KEY_SPACE ) then
+		textColor = RL.RED
+		textPos = { 192, 200 }
+	end
+end
+
+function RL.draw()
+	RL.ClearBackground( RL.RAYWHITE )
+	RL.DrawText( text, textPos, textSize, textColor )
+end