Move file_wrapper and make testable. (#1085)

* WIP Move file_wrapper and make testable.

* More tests, get text_editor compiling

* Back to working

* Run formatter

---------

Co-authored-by: kallanreed <kallanreed@outlook.com>

firmware/test/application/CMakeLists.txt

@@ -36,11 +36,13 @@ add_executable(application_test EXCLUDE_FROM_ALL
 	${PROJECT_SOURCE_DIR}/main.cpp
 	${PROJECT_SOURCE_DIR}/test_basics.cpp
 	${PROJECT_SOURCE_DIR}/test_circular_buffer.cpp
+	${PROJECT_SOURCE_DIR}/test_file_wrapper.cpp
 	${PROJECT_SOURCE_DIR}/test_optional.cpp
 )
 
 target_include_directories(application_test PRIVATE
 	${DOCTESTINC}
+	${PROJECT_SOURCE_DIR}/../../application
 	${COMMON}
 	${PORTINC}
 	${KERNINC}
@@ -49,6 +51,7 @@ target_include_directories(application_test PRIVATE
 	${PLATFORMINC}
 	${BOARDINC}
 	${CHIBIOS}/os/various
+	${FATFSINC}
 	${BASEBAND}
 )