Update empty method guards to new style with regex (see PR).
Used clang-format 18.1.8.
New actions to validate code formatting is added.
Update .clang-format with disabling of include sorting.
It is temporary changes, then include will be sorted.
Apply formatting for /src and /tools folder.
The files with .hxx,.cxx,.lxx,.h,.pxx,.hpp,*.cpp extensions.
New clang-format configuration added to determinate code style.
The default version is 16.
Extend CMake to copy config file to build root.
Method/function separator deprecation:
In case if function/method has declaration in header,
definition must not have related comment.
Only //==== [100 chars] ==== is allowed as a not connected
separator.
In case if function/method has NOT declaration in header,
definition must have related comment in doxygen style:
// Descriptions
// @param
// @return
Or just function/method separator:
//==== [100 chars] ====
All old separators with no description must be replaced to
//==== [100 chars] ====
