create unix socket and qauld-ctl binary

[Harshil-Jani]

Description

With reference to #541. Currently , This PR is about implementing a Unix Socket and creating a basic layout for qauld-ctl binary.

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[Harshil-Jani]

I have read the CLA Document and I hereby sign the CLA

[Parinjoy]

This PR draft fulfills all the objectives of #541 ?

[Harshil-Jani]

This PR draft fulfills all the objectives of #541 ?

Hey This PR is idea about how the objectives metioned can be approached. Feel free to try out and extend this ahead.

[MathJud]

Regarding the path to the unix socket, there is a standard path to add the process specific files of a program. qauld should create the following folder on linux, unix & macos:

• /var/run/qauld/qauld.sock the unix socket file
• /var/run/qauld/qauld.pid a file containing the qauld process id, in order to shut the process down.

Further future extensions:

• If somebody would like to run several deamons on the same machine from different users, we could extend the naming convention by adding a subfolder with the user number to the path. e.g. /var/run/qauld/1000/

[MathJud]

Windows is now supporting unix sockets too. There is the question on how to make it work there.