[FL-1926] Flipper File Format addons (#753)

* Flipper file format: remove C wrapper
* Flipper file format: open append, float, uint32_t as array, delete key, value count
* Flipper file format: fix scratchpad location
* Flipper file format: add EOL on append
* SubGHZ keystore: update encryption type read and write
* Flipper File Format: enhanced version
* Flipper File Format: fix naming
* Flipper File Format: fix "open" subset naming
* Flipper File Format: tests
* Flipper File Format: file helper naming
* SubGHZ keystore: merge with current state of flipper file format
* Flipper File Format:  update make recipe
* Flipper File Format: open new file method

lib/flipper_file/flipper_file_int32.c

@@ -0,0 +1,42 @@
+#include <furi.h>
+
+#include "flipper_file.h"
+#include "flipper_file_i.h"
+#include "flipper_file_helper.h"
+
+static bool flipper_file_write_int32_internal(
+    File* file,
+    const char* key,
+    const void* _data,
+    const uint16_t data_size) {
+    return flipper_file_write_internal(file, key, _data, data_size, FlipperFileValueInt32);
+};
+
+bool flipper_file_read_int32(
+    FlipperFile* flipper_file,
+    const char* key,
+    int32_t* data,
+    const uint16_t data_size) {
+    furi_assert(flipper_file);
+    return flipper_file_read_internal(
+        flipper_file->file, key, data, data_size, FlipperFileValueInt32);
+}
+
+bool flipper_file_write_int32(
+    FlipperFile* flipper_file,
+    const char* key,
+    const int32_t* data,
+    const uint16_t data_size) {
+    furi_assert(flipper_file);
+    return flipper_file_write_int32_internal(flipper_file->file, key, data, data_size);
+}
+
+bool flipper_file_update_int32(
+    FlipperFile* flipper_file,
+    const char* key,
+    const int32_t* data,
+    const uint16_t data_size) {
+    furi_assert(flipper_file);
+    return flipper_file_delete_key_and_call(
+        flipper_file, key, flipper_file_write_int32_internal, key, data, data_size);
+}