[FL-3488] Assign tickets to all TODO items (#2988)

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

applications/debug/unit_tests/furi/furi_memmgr_test.c

@@ -26,7 +26,7 @@ void test_furi_memmgr() {
         mu_assert_int_eq(66, ((uint8_t*)ptr)[i]);
     }
 
-    // TODO: fix realloc to copy only old size, and write testcase that leftover of reallocated memory is zero-initialized
+    // TODO FL-3492: fix realloc to copy only old size, and write testcase that leftover of reallocated memory is zero-initialized
     free(ptr);
 
     // allocate and zero-initialize array (calloc)

applications/debug/unit_tests/furi/furi_string_test.c

@@ -69,7 +69,7 @@ MU_TEST(mu_test_furi_string_mem) {
     mu_check(string != NULL);
     mu_check(!furi_string_empty(string));
 
-    // TODO: how to test furi_string_reserve?
+    // TODO FL-3493: how to test furi_string_reserve?
 
     // test furi_string_reset
     furi_string_reset(string);