remove /include/twn_config.h, move defauls to relevant headers

src/rendering/twn_text_c.h

@@ -12,6 +12,10 @@
 #define ASCII_END 128
 #define NUM_DISPLAY_ASCII ((ASCII_END - ASCII_START) + 1)
 
+#define TEXT_FONT_TEXTURE_SIZE_DEFAULT 2048
+#define TEXT_FONT_OVERSAMPLING_DEFAULT 4
+#define TEXT_FONT_FILTERING_DEFAULT TEXTURE_FILTER_LINEAR
+
 
 typedef struct FontData {
     stbtt_packedchar char_data[NUM_DISPLAY_ASCII];