Warn when registering response handler w/o response ID
Warn when registering response handler w/o response ID

Warn in log files when we try to set a response handler on a command
that does not produce a response.

bkircher/vscode-janus-debug,bkircher/vscode-janus-debug,otris/vscode-janus-debug,tineheller/vscode-janus-debug,tineheller/vscode-janus-debug,otris/vscode-janus-debug