[FL-3884] Proper integer parsing (#3839)

* feat: strint_to_uint32 and tests
* fix: permit explicit bases and prefixes
* feat: strint_to_{int32,uint16,int16}
* feat: strint_to_u?int64
* refactor: replace strtol, strtoul, sscanf with strint_to_*
* fix: api symbols
* docs: document parameter `end` of strint_to_uint_32
* style: apply changes requested by hedger
* refactor: fix pvs-studio diagnostic
* style: apply changes requested by CookiePLMonster
* fix: unused var
* fix: pointer type
* refactor: convert atoi to strint_to_*
* fix: strint_to_uint8 doesn't actually exist ._ .
* fix: memory leak
* style: address review comments
* Toolbox: couple small comments in the code and doxygen comment update. SubGhz, Loader: fix strint usage.
* Loader: fix incorrect cast

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

lib/update_util/resources/manifest.c

@@ -1,6 +1,7 @@
 #include "manifest.h"
 
 #include <toolbox/stream/buffered_file_stream.h>
+#include <toolbox/strint.h>
 #include <toolbox/hex.h>
 
 struct ResourceManifestReader {
@@ -97,7 +98,12 @@ ResourceManifestEntry* resource_manifest_reader_next(ResourceManifestReader* res
             furi_string_right(
                 resource_manifest->linebuf, sizeof(resource_manifest->entry.hash) * 2 + 1);
 
-            resource_manifest->entry.size = atoi(furi_string_get_cstr(resource_manifest->linebuf));
+            if(strint_to_uint32(
+                   furi_string_get_cstr(resource_manifest->linebuf),
+                   NULL,
+                   &resource_manifest->entry.size,
+                   10) != StrintParseNoError)
+                break;
 
             /* Remove size */
             size_t offs = furi_string_search_char(resource_manifest->linebuf, ':');