code/refactor: Deduplicate sigscan code

> cleanup unnecessary code, should break nothing
> probably will cause merge issues someday
> add missing `replace_pattern_from`

util/sigscan.h

@@ -71,4 +71,22 @@ intptr_t replace_pattern(
         intptr_t offset,
         intptr_t usage);
 
+intptr_t replace_pattern_from(
+        HMODULE module,
+        const unsigned char *pattern,
+        const char *mask,
+        intptr_t offset,
+        intptr_t usage,
+        intptr_t start_from,
+        const unsigned char *replace_data,
+        const char *replace_mask);
+
+intptr_t replace_pattern_from(
+        HMODULE module,
+        const std::string &signature,
+        const std::string &replacement,
+        intptr_t offset,
+        intptr_t usage,
+        intptr_t start_from);
+
 bool get_pe_identifier(const std::filesystem::path& dll_path, uint32_t* time_date_stamp, uint32_t* address_of_entry_point);