Prepare dev-builds infra

[Adnn]

• Ability to pause the simulation only, while still allowing rendering (e.g. flythrough camera, or top-down "editor like" camera). I.e. the application is still running, but on a control path where the simulation is not advancing.
• Jump into the debugger (the application is not running), but should not make an overlong update on resume
  • e.g. detect a threshold above which it becomes frame locked.
  • should naturally be addressed by locked update-time.