PY-24191 Skip sending superfluous messages from debugger to IDE about substituting current process with non-Python ones

PY-24191 Use explicit integer values for CommunicationRole constants, move CommunicationRole to pydevd_comm.py

Python documentation states about `os.exec*()` functions: "These functions all execute a new program, replacing the current process." This also applies for `subprocess.Popen()` in Python 2.x because it initially uses `os.fork()` and then `os.exec*()` function call for the child process.

Previously we put `CMD_PROCESS_CREATED` message in the queue and performed the original `os.exec*()` function call immediately. In the most cases Python debugger did not have enough time to process `CMD_PROCESS_CREATED` message from the queue and it has not being sent to the IDE.

Now when `PyDB` works in server mode we also wait for the response from the IDE after sending `CMD_PROCESS_CREATED` message to be sure that the IDE received it. Waiting for the response in server mode is required because the current process might become substituted before it actually sends the message and IDE will not try to connect to `PyDB` in this case. Waiting of the response in client mode is not required because the substituted process will try to connect to the IDE itself.

found by property testing

IDEA-198801: Correct key: selectionInactiveForeground does not work in tree - revert the fix for colored tree renderer

Kotlin 1.3.0 reports such cases as errors.

I still don't know how it is possible

win installer: silent mode of uninstallation should not be lost when uninstallation starts from UAC dialog.