Develop CMake frontend

[diivm]

Closes #25

WIP

[kunaltyagi]

The initial query is also created by a script? (bash script is ok)

[diivm]

The initial query is also created by a script? (bash script is ok)

@kunaltyagi

Step-by-step:

1. Navigate to your cmake project top-level directory.
2. Create a build directory build/.
3. Create the API directory build/.cmake/api/v1/query
4. Create the file build/.cmake/api/v1/query/codemodel-v2 and leave it empty
5. Re-run cmake (the configuration step)
6. CMake should have automatically created the directory build/.cmake/api/v1/reply containing the replies to our query.

(via https://silizium.io/post/cmake_build_information/)

How do we want to do it? A script or let the user handle it?

[kunaltyagi]

Thoughts on a 2 step script:

init_bindings.bash build/  # invokes `cmake .` as well to generate the results of the query
create_bindings.py --dir build --other-options