landuse timeseries for 1979-2026 for ne120 resolution

[ekluzek]

CAM needs a landuse timeseries file for 1979-2026 for the ne120 resolution.

See the conversation here:

https://github.com/NCAR/amwg_dev/discussions/585#discussioncomment-10709399

Definition of done:

• [ ] Create the dataset
• [ ] Add it to inputdata and rimport it
• [ ] Add it to namelist_defaults_ctsm
• [ ] Add creation of it to the mksurfdata_esmf Makefile

[wwieder]

Since @adamrher is creating what's needed for short term tests, let's make this later, maybe even after we have CMIP7 datasets (ctsm5.4)?