expose file API to enable IO detouring

src/linker/lnk_io.h

@@ -12,6 +12,16 @@ typedef struct
   U8          *buffer;
 } LNK_DiskReader;
 
+////////////////////////////////
+// Shared File API
+
+shared_function int      lnk_open_file_read(char *path, uint64_t path_size, void *handle_buffer, uint64_t handle_buffer_max);
+shared_function int      lnk_open_file_write(char *path, uint64_t path_size, void *handle_buffer, uint64_t handle_buffer_max);
+shared_function void     lnk_close_file(void *raw_handle);
+shared_function uint64_t lnk_size_from_file(void *raw_handle);
+shared_function uint64_t lnk_read_file(void *raw_handle, void *buffer, uint64_t buffer_max);
+shared_function uint64_t lnk_write_file(void *raw_handle, uint64_t offset, void *buffer, uint64_t buffer_size);
+
 ////////////////////////////////
 
 internal String8      lnk_read_data_from_file_path(Arena *arena, String8 path);