pmt: Improvement.

- At build time, the version, compile time, CMake version, compiler version, and compiler flags are retrieved with the new CMake module and a header is created. This header provides more robust version management and notifications.
- Build warnings fixed, code corrected for compilation.
- Improvements were made to CMake code.
- Modifications were made to the tests to read the library's version information.

srclib/libhelper/src/Sha256.cpp

@@ -25,7 +25,7 @@
 
 namespace Helper {
 
-std::optional<std::string_view> sha256Of(const std::string_view path)
+std::optional<std::string> sha256Of(const std::string_view path)
 {
 	if (!fileIsExists(path)) {
 		throw Error("Is not exists or not file: %s", path.data());