ADD: Support reading the new compact strip map format

[fhagemann]

nuclearizer currently only supports strip map files that have 9 columns.
Example file: strip_map_priLV_June2025.map

# Columns are strip_id, rtb, drm, is_primary, asic, channel, detector, side (0=LV, 1=HV), strip
0 0 0 0 0 0 0 1 32
1 0 0 0 0 1 0 1 33
2 0 0 0 0 2 0 1 34
3 0 0 0 0 3 0 1 35
...

Some of these columns are redundant, as the information can be retrieved from the first column strip_id.
This allows for defining compact strip maps, excluding the columns with redundant information.
Example file: strip_map_priLV_Feb2026.map

# Columns are strip_id, detector, side (0=LV, 1=HV), strip
0 0 1 32
1 0 1 33
2 0 1 34
3 0 1 35
...

NRL is using the compact strip map format as default, and we should allow for nuclearizer to be able to read the new file format too.

This PR now also allows reading strip map files in the reduced 4-column format.

I tested that this code is doing the correct thing by reading the same HDF5 file using both strip maps and validating that the output ROA files are identical.