OpenFE v0.11 benchmarks

These are the results from four systems from the protein-ligand benchmark set, HIF2a, PTP1B, P38, SHP2 (https://github.com/openforcefield/protein-ligand-benchmark, commit a0b67b9). 

Simulation details:

• OpenFE version 0.11
• Kartograf mapper
• MST networks
• Antechamber AM1BCC partial charges
• Small molecule forcefield: OpenFF 2.0
• 1 ns equilibration / 5 ns production run
• 11 lambda windows