Added loadOrder support + fixed some bug

add the getDataPath function / .h that will find the data folder of the game.
this fixe some issue with older games like morrowind

src/getDataPath.c

@@ -0,0 +1,40 @@
+
+#include "getDataPath.h"
+#include "main.h"
+#include "steam.h"
+
+#include <glib.h>
+#include <unistd.h>
+
+error_t getDataPath(int appid, char ** destination) {
+    GHashTable * gamePaths;
+	error_t status = search_games(&gamePaths);
+	if(status == ERR_FAILURE) {
+		return ERR_FAILURE;
+	}
+
+	int gameId = getGameIdFromAppId(appid);
+	if(gameId < 0 ) {
+		return ERR_FAILURE;
+	}
+
+    const char * path = g_hash_table_lookup(gamePaths, &appid);
+	char * gameFolder = g_build_filename(path, "steamapps/common", GAMES_NAMES[gameId], NULL);
+	//the folder names for older an newer titles
+	char * dataFolderOld = g_build_filename(gameFolder, "Data Files", NULL);
+	char * dataFolderNew = g_build_filename(gameFolder, "Data", NULL);
+	g_free(gameFolder);
+
+	*destination = NULL;
+	if(access(dataFolderOld, F_OK) == 0) {
+		*destination = strdup(dataFolderOld);
+	} else if(access(dataFolderNew, F_OK) == 0) {
+		*destination = strdup(dataFolderOld);
+	}
+
+	g_free(dataFolderNew);
+	g_free(dataFolderOld);
+
+	if(*destination == NULL) return ERR_FAILURE;
+	else return ERR_SUCCESS;
+}