Combine lineExpansionWarnings for a single input

[MicahGale]

If you do a mass update of cell and surface numbers that leads to a lot of line expansions, the warnings can get very annoying:

The value has expanded, and may change formatting. The original value was 2, new value is 65005.
  problem.write_to_file("updated_numbers.imcnp")
/var/tmp/pbs.1656331.lemhipbs/ipykernel_315073/2996620259.py:20: LineExpansionWarning: The input starting on Line 27 of: updated_numbers.imcnp expanded. 
The new input is:
        27| 65005 1 -8.9 -65020 -66240 66235  imp:n=1 $ COBALT_TARGET_PELLET2 
The value has expanded, and may change formatting. The original value was -63, new value is -65020.
  problem.write_to_file("updated_numbers.imcnp")
/var/tmp/pbs.1656331.lemhipbs/ipykernel_315073/2996620259.py:20: LineExpansionWarning: The input starting on Line 27 of: updated_numbers.imcnp expanded. 
The new input is:
        27| 65005 1 -8.9 -65020 -66240 66235  imp:n=1 $ COBALT_TARGET_PELLET2 
The value has expanded, and may change formatting. The original value was -62, new value is -66240.
  problem.write_to_file("updated_numbers.imcnp")
/var/tmp/pbs.1656331.lemhipbs/ipykernel_315073/2996620259.py:20: LineExpansionWarning: The input starting on Line 27 of: updated_numbers.imcnp expanded. 
The new input is:
        27| 65005 1 -8.9 -65020 -66240 66235  imp:n=1 $ COBALT_TARGET_PELLET2 
The value has expanded, and may change formatting. The original value was 64, new value is 66235.
  problem.write_to_file("updated_numbers.imcnp")

It would be nice to combine all warnings from a single input to an easier to understand warning.