✨Pros 4/feature/is_installed

[ryan-doan]

Summary:

Added methods to device classes to check if said device is installed correctly in its port.

Motivation:

Quickly check installation status of devices.

References (optional):

Add a "is_installed()" method for devices #497.

Test Plan:

• [x] Compile.
• [x] Return true when correct device is installed, true for any device if the variable's class is Device (except class Serial).
• [x] Return false when no device or the incorrect device is installed (except class Serial). IMPORTANT
• [ ] Right now the assumption is to check serial device against E_DEVICE_GENERIC, but since this class is reserved for the user's custom electronics, this class has not been tested.
• [ ] Update newly merged changes for motor groups.

[Richard-Stump]

Your PR is based off of develop. It needs to be based off of develop-pros-4.