Storage: tree timestamps (#1971)

* Storage: tree timestamps
* Rpc: add storage timestamp
* Storage: correct timestamp owner
* Storage: update timestamp at sd mount

Co-authored-by: SG <who.just.the.doctor@gmail.com>

applications/services/storage/storage_message.h

@@ -42,6 +42,11 @@ typedef struct {
     uint16_t name_length;
 } SADataDRead;
 
+typedef struct {
+    const char* path;
+    uint32_t* timestamp;
+} SADataCTimestamp;
+
 typedef struct {
     const char* path;
     FileInfo* fileinfo;
@@ -78,6 +83,7 @@ typedef union {
     SADataDOpen dopen;
     SADataDRead dread;
 
+    SADataCTimestamp ctimestamp;
     SADataCStat cstat;
     SADataCFSInfo cfsinfo;
 
@@ -112,6 +118,7 @@ typedef enum {
     StorageCommandDirClose,
     StorageCommandDirRead,
     StorageCommandDirRewind,
+    StorageCommandCommonTimestamp,
     StorageCommandCommonStat,
     StorageCommandCommonRemove,
     StorageCommandCommonMkDir,