introduce single CMake script build all packages

This introduces single CMake script to build all packages and non-package build with same result, including shared library SONAME and versioning.

Complicated shellscripting to build package build are no longer required,
everything can be build with "cmake -S . -B build &&  cmake --build build".

Note that there is a limitation, this requires a dummy C code to call
libscylla-cpp-driver function.
It is because this rebuild libraries with C Linker on CMake.
The dummy C code is located at dummy/dummy.c.

CMakeList.txt is now fully re-written without unrelated codes.
And to build Rust code easier, imported CMakeRust project:
https://github.com/Devolutions/CMakeRust

And also FindLibClang.cmake from cpp2py:
https://github.com/TRIQS/cpp2py/blob/master/cmake/FindLibClang.cmake

Both included few patches since little bit outdated, and have few bugs.

Author: syuu1228

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Setup environment
       run: |
         sudo apt-get update
-        sudo apt-get install libssl1.1 libuv1-dev libkrb5-dev libc6-dbg
+        sudo apt -get install libssl-dev libclang-dev pkg-config openssl ca-certificates curl clang cmake
         sudo snap install valgrind --classic
         pip3 install https://github.com/scylladb/scylla-ccm/archive/master.zip
         sudo sh -c "echo 2097152 >> /proc/sys/fs/aio-max-nr"

.github/workflows/cassandra.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Setup environment
         run: |
           sudo apt-get update
-          sudo apt-get install libssl1.1 libuv1-dev libkrb5-dev libc6-dbg
+          sudo apt -get install libssl-dev libclang-dev pkg-config openssl ca-certificates curl clang cmake
           sudo snap install valgrind --classic
           pip3 install https://github.com/scylladb/scylla-ccm/archive/master.zip
           sudo sh -c "echo 2097152 >> /proc/sys/fs/aio-max-nr"