Beckhoff: Automation tools silently fail to build plc solution

## Where?

We discovered that if the PLC_solution folder of BeckoffTestRunner has not recursively pulled the submodules (ie. tca_std_lib) the automation tools won't fall over, despite not generating a .tpy file. We should make the automation tools spit out an error if this occurs as everything looks fine. The old `AutomationTools` used to complain if it couldn't build the solution so we should make TwincatAutomationTools do the same.

## Reproducible?
Yes

### To Reproduce
clone beckhoff test runner and just use `git submodule update --init` without the recursive flag
try and run build.bat
notice that it doesn't break! and falls over silently, the ioc tests subsequently fail

## Acceptance criteria
- [ ] TwincatAutomationTools is made to spit out lots of errors if the code is actually broken and the solution fails to build