Bash-based run script with mpirun support

**Work in progress**

## Todo
- [x] Manually export environment variables with "-x"
- [ ] Detect whether "resv-ports" or "OMPI_leave_pinned", etc should be used. Make configurable by environment variable
- [x] Setup default partition environment variable

@nelsonje any thoughts on ways to take the env variables and add them all as flags?