✨PROS 4: Make constructors explicit

[ryan-doan]

Summary:

Add "explicit" to devices' constructors.

Motivation:

Prevent implicit copies and conversion of classes.

References (optional):

PROS 4: Rotation Class ctors not explicit https://github.com/purduesigbots/pros/issues/515

Test Plan:

• [x] Compile
• [ ] Check for exceptions to explicit and constructors missing explicit
• [ ] pros::Rotation rot = pros::Rotation(1); should be invalid (might be prudent to check every constructors).

[Richard-Stump]

Please switch this branch to merge to develop-pros-4 since this is a pros 4 task.