ci: split MTK into different jobs

Author: AayushSabharwal

.github/workflows/Downstream.yml

@@ -18,7 +18,11 @@ jobs:
         julia-version: [1]
         os: [ubuntu-latest]
         package:
-          - {user: SciML, repo: ModelingToolkit.jl, group: All}
+          - {user: SciML, repo: ModelingToolkit.jl, group: InterfaceI}
+          - {user: SciML, repo: ModelingToolkit.jl, group: InterfaceII}
+          - {user: SciML, repo: ModelingToolkit.jl, group: Initialization}
+          - {user: SciML, repo: ModelingToolkit.jl, group: SymbolicIndexingInterface}
+          - {user: SciML, repo: ModelingToolkit.jl, group: FMI}
           - {user: SciML, repo: Catalyst.jl, group: All}
           - {user: SciML, repo: NeuralPDE.jl, group: NNPDE}
           - {user: SciML, repo: DataDrivenDiffEq.jl, group: Core}