[FL-3299] furi_crash: added C2 status; added fw-version gdb command (#2638)

* furi_crash: added C2 status
* debug: Added "fw-version" gdb command; vscode: updated configuration to use new command
* debug: added fw-info command to debug_other session
* Toolbox: versioned structure for Version
* debug: fw-version: no longer needs an ELF file loaded
* debug: flipperversion: removed unused variable
* debug_other: print running fw version

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>

lib/toolbox/version.c

@@ -1,23 +1,34 @@
 #include "version.h"
-
+#include <furi.h>
 /* This header is autogenerated by build system */
 #include "version.inc.h"
 
+#define VERSION_MAGIC (0xBE40u)
+#define VERSION_MAJOR (0x1u)
+#define VERSION_MINOR (0x0u)
+
 struct Version {
+    // Header
+    const uint16_t magic;
+    const uint8_t major;
+    const uint8_t minor;
+    // Payload
     const char* git_hash;
     const char* git_branch;
-    const char* git_branch_num;
     const char* build_date;
     const char* version;
+    // Payload bits and pieces
     const uint8_t target;
     const bool build_is_dirty;
 };
 
 /* version of current running firmware (bootloader/flipper) */
 static const Version version = {
+    .magic = VERSION_MAGIC,
+    .major = VERSION_MAJOR,
+    .minor = VERSION_MINOR,
     .git_hash = GIT_COMMIT,
     .git_branch = GIT_BRANCH,
-    .git_branch_num = GIT_BRANCH_NUM,
     .build_date = BUILD_DATE,
     .version = VERSION
 #ifdef FURI_RAM_EXEC
@@ -41,7 +52,8 @@ const char* version_get_gitbranch(const Version* v) {
 }
 
 const char* version_get_gitbranchnum(const Version* v) {
-    return v ? v->git_branch_num : version.git_branch_num;
+    UNUSED(v);
+    return "0";
 }
 
 const char* version_get_builddate(const Version* v) {