Embed assets in elf file (#2466)

* FBT: file_assets generator
* Elf file: process manifest section externally
* FBT, file_assets generator: add assets signature
* Storage: assets path alias
* Flipper application: assets unpacker
* Apps, Storage: use '/data' alias for apps data
* Storage: copy file to file
* Assets: log flag, fixes
* Update f18 api
* Assets: asserts
* Assets: fix signature_data check
* App assets: example
* Example assets: fix folder structure in readme
* Assets: fix error handling
* Assets builder: use ansii instead of utf-8, use .fapassets section instead of .fapfiles, add assets path to signature
* Elf file: comment strange places
* Storage: totaly optimized storage_file_copy_to_file

lib/flipper_application/elf/elf_file.h

@@ -37,6 +37,14 @@ typedef enum {
     ELFFileLoadStatusMissingImports,
 } ELFFileLoadStatus;
 
+typedef enum {
+    ElfProcessSectionResultNotFound,
+    ElfProcessSectionResultCannotProcess,
+    ElfProcessSectionResultSuccess,
+} ElfProcessSectionResult;
+
+typedef bool(ElfProcessSection)(File* file, size_t offset, size_t size, void* context);
+
 /**
  * @brief Allocate ELFFile instance
  * @param storage 
@@ -59,21 +67,12 @@ void elf_file_free(ELFFile* elf_file);
  */
 bool elf_file_open(ELFFile* elf_file, const char* path);
 
-/**
- * @brief Load ELF file manifest
- * @param elf 
- * @param manifest 
- * @return bool 
- */
-bool elf_file_load_manifest(ELFFile* elf, FlipperApplicationManifest* manifest);
-
 /**
  * @brief Load ELF file section table (load stage #1)
  * @param elf_file 
- * @param manifest 
  * @return bool 
  */
-bool elf_file_load_section_table(ELFFile* elf_file, FlipperApplicationManifest* manifest);
+bool elf_file_load_section_table(ELFFile* elf_file);
 
 /**
  * @brief Load and relocate ELF file sections (load stage #2)
@@ -122,6 +121,21 @@ void elf_file_init_debug_info(ELFFile* elf_file, ELFDebugInfo* debug_info);
  */
 void elf_file_clear_debug_info(ELFDebugInfo* debug_info);
 
+/**
+ * @brief Process ELF file section
+ * 
+ * @param elf_file 
+ * @param name 
+ * @param process_section 
+ * @param context 
+ * @return ElfProcessSectionResult 
+ */
+ElfProcessSectionResult elf_process_section(
+    ELFFile* elf_file,
+    const char* name,
+    ElfProcessSection* process_section,
+    void* context);
+
 #ifdef __cplusplus
 }
 #endif