Verify Paths #20
Description
We should verify that at the very least paths exist before running tools. This can be especially useful when using inline mode and verifying that each configuration file exist for each tool that is invoked. Maybe this is a sign that we also stronger verification methods when processing arguments.
Not having strong verification in place can be frustrating for users as, if a path does not exist, auto-yamcs will just invoke the corresponding tool and that tool will error out ungracefully. Not to mention that users will be uncessarily waiting for minutes before these errors show up.