Add PMP as problem variant

Author: leonlan

read/Problem.py

@@ -8,6 +8,7 @@ class ProblemVariant(str, Enum):
     NPFSP = "NPFSP"
     NW_PFSP = "NW-PFSP"
     HFSP = "HFSP"
+    PMP = "PMP"
     # Permutation machine scheduling problems
     PFSP = "PFSP"
     SDST_PFSP = "SDST-PFSP"

read/read.py

@@ -16,6 +16,7 @@ def read(loc: Path, problem: ProblemVariant) -> ProblemData:
         ProblemVariant.HFSP: MachineInstance.parse_hfsp,
         ProblemVariant.NPFSP: MachineInstance.parse_npfsp,
         ProblemVariant.NW_PFSP: MachineInstance.parse_nw_pfsp,
+        ProblemVariant.PMP: MachineInstance.parse_pmp,
         # Permutation machine scheduling
         ProblemVariant.PFSP: MachineInstance.parse_pfsp,
         ProblemVariant.SDST_PFSP: MachineInstance.parse_sdst_pfsp,