Feat/poke man

[Prattbuw]

@Poofjunior, the goal of this PR is to confirm that poke detection and the FSM works as expected in the test code. I have tested and confirmed their functionality. Therefore, please verify the following:

• Pokes, represented as IR beam breaks, results in the poke detected flag to become true.
• Confirm that FSM logic is correct -- state transitions and state durations match expectations.
• Confirm that specified valve pins become energized and deenergized during the expected state.

Please let me know if you have any questions. Thanks!

[Prattbuw]

Figures showing the results of the FSM -- particularly the timing and order that valves are energized given a detected poke. The following were the prescribed state durations:

• Min poke time = 10 ms
• Vacuum close time = 20 ms
• Odor deliver time =10 ms
• Odor transition time = 30 ms
• Vacuum setup time = 20 ms
• Final valve energized (while vacuum valve energized) = 110 ms
  
  

[Prattbuw]

Also, here is a test showing that a poke is not considered "detected" if the IR beam break is less than the 10 ms min poke time.