[FL-520] Filesystem Api and App (#280)

* update fatfs integer types
* fix sector size to 512
* fix sector size calculation
* common fs api
* fs api realization (sd card + fat fs)
* better sector size definition
* more api realization fns
* add error description api, add common api
* fix api flag naming, run app
* add fs_info call
* disable fatfs strfuncs, enable fatfs chmod
* rework filesystem app
* sd detect cycle, sd menu, sd eject feature
* fix sd detect cycle
* sd card format routine
* ui improvements, sd info routine
* properly unmount card
* separate mode flags
* add api folder, move app, rename app
* fix api naming
* update st-card-test to use api
* update path to app
* fixed potential problem of using sizeof union
* updated api documentation, new time/date fns
* update codeowners
* changed app requirements
* changed app order
* sd insert/remove log

firmware/targets/f4/Src/fatfs/ffconf.h

@@ -47,7 +47,7 @@
 /   2: f_opendir(), f_readdir() and f_closedir() are removed in addition to 1.
 /   3: f_lseek() function is removed in addition to 2. */
 
-#define _USE_STRFUNC         2      /* 0:Disable or 1-2:Enable */
+#define _USE_STRFUNC         0      /* 0:Disable or 1-2:Enable */
 /* This option switches string functions, f_gets(), f_putc(), f_puts() and
 /  f_printf().
 /
@@ -68,7 +68,7 @@
 #define	_USE_EXPAND		0
 /* This option switches f_expand function. (0:Disable or 1:Enable) */
 
-#define _USE_CHMOD		0
+#define _USE_CHMOD		1
 /* This option switches attribute manipulation functions, f_chmod() and f_utime().
 /  (0:Disable or 1:Enable) Also _FS_READONLY needs to be 0 to enable this option. */
 
@@ -177,7 +177,7 @@
 /  arbitrary physical drive and partition listed in the VolToPart[]. Also f_fdisk()
 /  funciton will be available. */
 #define _MIN_SS    512  /* 512, 1024, 2048 or 4096 */
-#define _MAX_SS    4096  /* 512, 1024, 2048 or 4096 */
+#define _MAX_SS    512  /* 512, 1024, 2048 or 4096 */
 /* These options configure the range of sector size to be supported. (512, 1024,
 /  2048 or 4096) Always set both 512 for most systems, all type of memory cards and
 /  harddisk. But a larger value may be required for on-board flash memory and some