[FEATURE] - Manual manipulation of spectra inside GUI

[HJZollner]

Added a new feature to the GUI to manually manipulate spectra in the GUI. For this, you have to finish OspreyProcess. Afterwards, you have to click on the dataset you want to manipulate inside the listbox. Manipulation is done with the keyboard.

'Other intersting key presses after clicking are:\n' ...
'left arrow - remove data\n' ...
'right arrow - add data\n\r\n' ...
'In the Processed Tab you can manipulate the averaged spectrum as follows:\n' ...
'a - Subtract 5 degree from ph0\n' ...
'd - Add 5 degree to ph0\n' ...
'q - Subtract 0.00001 s from ph1\n' ...
'e - Add 0.00001 s to ph1\n' ...
's - Subtract 1 Hz from f\n' ...
'w - Add 1 Hz to f\n' ...
'f - Add 180 degree to ph0\n\r\n' ...
'You can change the axis of the processed plot as follows:\n' ...
'r - Reset y-axis limits\n' ...
'z - Zoom out y-axis\n' ...
'x - Zoom in y-axis\n' ...
'c - Move y-axis center down\n' ...
'v - Move y-axis center up'

• Spectra are automatically saved if Fit button is pressed.
• Press Save MRSCont button if you want to leave without fitting.
• Final manipulations are stored inside the manual field of each FID-A MRS struct