fix: Move cg further aft

[donstim]

The current CG position for the A32NX is too far forward. At the maximum structural takeoff weight of 79T, the A320 must have a CG of at least 27% MAC to be within the takeoff CG envelope. This cannot be done with the A32NX.

Summary of Changes

1. The empty weight CG position has been changed from 25% MAC to 30% MAC
2. The fwd/aft position of the fuel tanks have been modified in accordance with information from the A320 Weight and Balance Manual
3. The fwd/aft position of the loading stations have been modified based on a comparison of where they are located on the model in the external view using the debug weight screen to diagrams in the available documentation
4. The EFB has been updated with this information, which is needed to calculate the CG position. (Minor updates have been made to the leading edge MAC position and MAC chord length based on curent information from the MSFS debug weight and debug sim tuning windows.

Screenshots (if necessary)

BEFORE:
Payload stations (pink boxes- actual loading stations are in the middle of each box):

Cargo stations (pink boxes - kind of hard to see):

AFTER:
New payload stations shown here: (They are shown as pink boxes in MSFS. Since they are difficult to see in this shot, I have drawn some pink lines at the edge of each payload station.)

New cargo stations shown here. (In this case, the pink boxes are clear enough by themselves.)

References

Additional context

Discord username (if different from GitHub): donbikes#4084

Testing instructions

Confirm that the airplane can be loaded to 79T and be within the takeoff CG envelope shown above. Confirm that reasonable loading distributions do not result in unreasonable CG values.

How to download the PR for QA

Every new commit to this PR will cause a new A32NX artifact to be created, built, and uploaded.

1. Make sure you are signed in to GitHub
2. Click on the Checks tab on the PR
3. On the left side, click on the bottom PR tab
4. Click on the A32NX download link at the bottom of the page

[mico975]

Quality Assurance Tester Report

Discord : mico#3145
Object of testing: #7691
Tier of Testing : 1
Date : 11/01/2023

Testing Process:
Confirm that the airplane can be loaded to 79T and be within the takeoff CG envelope shown above. - OK
Confirm that reasonable loading distributions do not result in unreasonable CG values. - OK

Negatives:
N/A

Testing Results:
Passed

Conclusions:
LGTM

Media: