Update 12 files

- /14_ORIGEN/workshop/solutions/problems2/.gitkeep
- /14_ORIGEN/workshop/solutions/problems2/origami_pwr_high_burnup.inp
- /14_ORIGEN/workshop/solutions/problems2/pwr_04.inp
- /14_ORIGEN/workshop/solutions/problems2/pwr_06.inp
- /14_ORIGEN/workshop/solutions/problems2/pwr_08.inp
- /14_ORIGEN/workshop/solutions/problems2/pwr_10.inp
- /14_ORIGEN/workshop/solutions/problem2/pwr_06.inp
- /14_ORIGEN/workshop/solutions/problem2/origami_pwr_high_burnup.inp
- /14_ORIGEN/workshop/solutions/problem2/pwr_04.inp
- /14_ORIGEN/workshop/solutions/problem2/pwr_08.inp
- /14_ORIGEN/workshop/solutions/problem2/pwr_10.inp
- /14_ORIGEN/workshop/solutions/problem2/.gitkeep