Database: update to EPSG v11.029, and fix Geog3D_to_Geog2D_GravityRelatedHeight to work with CompoundCRS

[rouault]

@Jochem-L This fixes the BES2020 Saba to Saba height concatenated operation:

$ PROJ_DATA=data bin/projinfo -k operation EPSG:10675
PROJ string:
+proj=pipeline
  +step +proj=axisswap +order=2,1
  +step +proj=unitconvert +xy_in=deg +z_in=m +xy_out=rad +z_out=m
  +step +proj=cart +ellps=GRS80
  +step +inv +proj=helmert +exact +x=1138.7432 +y=-2064.4761 +z=110.7016
        +rx=-214.615206 +ry=479.360036 +rz=-164.703951 +s=-402.32073
        +convention=coordinate_frame
  +step +inv +proj=cart +ellps=intl
  +step +proj=unitconvert +xy_in=rad +z_in=m +xy_out=deg +z_out=m
  +step +proj=axisswap +order=2,1

I see there's a new grid referenced bongeo2004.gtx. I suppose you'll submit it for inclusion in PROJ-data and here?

[Jochem-L]

Good to hear that the issue has been resolved by EPSG.
I have created this PR for the tif version of the geoid file: OSGeo/PROJ-data#133
Do you need anything else?

[rouault]

Do you need anything else?

yes, also an addition in the grid_alternatives.sql file of this repository. Example: #3817