(ARCalibration): load calibration input image folders

What does this MR do?

• Add a service to load image folders with calibration inputs.
• Move the detection method to the calibration3d library.

How to test it?

• Download the required test data from this MR.
• Run ARCalibration
• Set chessboard parameters to 9x6x10mm
• Click on the folder icon and load this folder
• Calibrate.
• Do the same for extrinsic calibration, you can use this dataset
• Calibrate.

Associated Issues/Merge Requests

• Issues

  • Fixes #345 (closed)
  • Closes story #251 (closed)

• Merge requests

  • Depends on Sight/sight-data!5