Misc changes

modules/LibC.core

@@ -1,5 +1,17 @@
-size_t :: U64
+size_t :: U64 // @todo(Krzosa): Need this type
+long :: #strict int // @todo(Krzosa): Need this type
 
 malloc :: #foreign (size: size_t): *void
 realloc :: #foreign (ptr: *void, size: size_t): *void
 free :: #foreign (ptr: *void)
+
+FILE :: #strict U64 // Doesnt matter the type just handle
+fopen :: #foreign (file: *char, mode: *char): *FILE
+fclose :: #foreign (file: *FILE): int
+fseek :: #foreign (public_stream: *FILE, offset: long, whence: int): int
+ftell :: #foreign (public_stream: *FILE): long
+fread :: #foreign (buffer: *void, element_size: size_t, element_count: size_t, stream: *FILE): size_t
+
+SEEK_CUR :: 1
+SEEK_END :: 2
+SEEK_SET :: 0