Added NetCDF Connector app for netCDF file import, which can be accessed from menu Data: Connect to File: NetCDF

NetCDF Connector supports importing netCDF 4 dimensions one slice as 3D data into Matrixpage, for example:

When a netCDF file have a 4D variable e, give it a selected path: NetCDF/e[x][y][z][1],NetCDF/e[z][1][y][x]etc