Codechange: Move RawText::GetEncodedText() out of header.

This allows it to use StringID without polluting includes.

src/script/api/script_text.cpp

@@ -20,6 +20,10 @@
 
 #include "../../safeguards.h"
 
+EncodedString RawText::GetEncodedText()
+{
+	return ::GetEncodedString(STR_JUST_RAW_STRING, this->text);
+}
 
 ScriptText::ScriptText(HSQUIRRELVM vm)
 {