DeployerVerticle should not fail if /verticles directory is not in workingDir, but rather watch the workingDir for a /verticles directory to be created

[kristian]

Describe the bug
Currently when NeonBee is started, DeployerVerticle fails to start with a...

java.nio.file.NoSuchFileException: <working_dir_path>\verticles
        at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:85)
        at java.base/sun.nio.fs.WindowsException.asIOException(WindowsException.java:112)
        at java.base/sun.nio.fs.WindowsWatchService$Poller.implRegister(WindowsWatchService.java:366)
        at java.base/sun.nio.fs.AbstractPoller.processRequests(AbstractPoller.java:265)
        at java.base/sun.nio.fs.WindowsWatchService$Poller.run(WindowsWatchService.java:596)
        at java.base/java.lang.Thread.run(Thread.java:829)

... exception, if the working directory does not contain a verticles folder.

To Reproduce
Start NeonBee with a working directory without a verticles directory.

Expected behavior
NeonBee to start without an exception and the DeployerVerticle watching the workingDir for a verticles directory to be created which is then watched for new verticles.