README: Update component descriptions for libisrcrypto and libisrsql
README: Update component descriptions for libisrcrypto and libisrsql

- Bring libisrcrypto description up to date with current functionality

- Update README for libisrsql wrapper library

cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr,cmusatyalab/openisr