Build and run compiler tests using CMake

Build and run compiler tests using CMake

General information

Added generic way to cover code by tests for many languages (you just need to make a correct header file for generator for your language - example in netcore implementation)

At current moment these tests use free Catch library (https://github.com/catchorg/Catch2/tree/Catch1.x) for easy test creation and usage. Decision to use it was because of simplicity, easy usage, one header file to use, stable community and growing interest (https://cpp.libhunt.com/project/googletest-google/vs/catch?rel=cmp-cmp)

Also, maybe, later it will be migrated to Catch2 (https://github.com/philsquared/Catch) - depends on need to support legacy compilers (c++98)

How to add your tests

Open CMakeLists.txt
Set On to call of THRIFT_ADD_COMPILER for your language

THRIFT_ADD_COMPILER(netcore "Enable compiler for .NET Core" ON)

Create folder with name specified in list of languages in CMakeLists.txt
Create tests in folder for your language (with extensions like .c - cc, cpp, etc)
- Don't forget to add include of catch.hpp in your test file
```
#include "../catch/catch.hpp"
```
If you need - add files manually to thrift_compiler_tests_manual_SOURCES in CMakeLists.txt similar to

# you can add some files manually there 
set(thrift_compiler_tests_manual_SOURCES
    # tests file to avoid main in every test file
    ${CMAKE_CURRENT_SOURCE_DIR}/tests_main.cc
)

Run cmake with arguments for your environment and compiler
Enjoy

Build and run tests on Unix-like systems

Prerequisites:

Install CMake - https://cmake.org/download/
Install winflexbison - https://sourceforge.net/projects/winflexbison/

Build and run test with CMake

Run commands in command line in current directory:

mkdir cmake-vs && cd cmake-vs
cmake ..
cmake --build .
ctest -C Debug -V

Build and run tests on Windows

Prerequisites:

Install CMake - https://cmake.org/download/
Install winflexbison - https://sourceforge.net/projects/winflexbison/
Install VS2017 Community Edition - https://www.visualstudio.com/vs/whatsnew/ (ensure that you installed workload “Desktop Development with C++” for VS2017)

Generation of VS project with CMake, build and run on Windows

Run commands in command line in current directory (ensure that VS installed):

mkdir cmake-vs
cd cmake-vs
cmake ..
cmake --build .
ctest -C Debug -V