Bug: No pre-config hook execution if reconfigure doesn't happen with meson setup

Problem

Project reconfigure can happen even without running meson setup. If build_master.json is out of date, then a new meson.build will be generated, thus project reconfigure would occur even if you run meson compile, in which case build_master wouldn't know that project reconfiguring is happening and wouldn't execute the preconfigure hook scripts.

Solution

Use Inter-Process-Communication like PIPE, Message Queus, or Sockets to establish a communication channel between build_master process and meson process. When meson starts the project reconfiguration due to any stimuli, it would send a message or a signal to the build_master process to allow that to execute its pre-configuration hook scripts, and after script completion, build_master process would send an ACK to the meson process to let it continue further in project reconfiguration.