Refactoring solvers (#541)

* Refactoring solvers

* Simplify logic compile
* Improve and update doc
* Create SupervisedSolverInterface
* Specialize SupervisedSolver and ReducedOrderModelSolver
* Create EnsembleSolverInterface + EnsembleSupervisedSolver
* Create tests ensemble solvers

* formatter

* codacy

* fix issues + speedup test

pina/solver/__init__.py

@@ -11,13 +11,33 @@ __all__ = [
     "CompetitivePINN",
     "SelfAdaptivePINN",
     "RBAPINN",
+    "SupervisedSolverInterface",
     "SupervisedSolver",
     "ReducedOrderModelSolver",
+    "DeepEnsembleSolverInterface",
+    "DeepEnsembleSupervisedSolver",
+    "DeepEnsemblePINN",
     "GAROM",
 ]
 
 from .solver import SolverInterface, SingleSolverInterface, MultiSolverInterface
-from .physics_informed_solver import *
-from .supervised import SupervisedSolver
-from .reduced_order_model import ReducedOrderModelSolver
+from .physics_informed_solver import (
+    PINNInterface,
+    PINN,
+    GradientPINN,
+    CausalPINN,
+    CompetitivePINN,
+    SelfAdaptivePINN,
+    RBAPINN,
+)
+from .supervised_solver import (
+    SupervisedSolverInterface,
+    SupervisedSolver,
+    ReducedOrderModelSolver,
+)
+from .ensemble_solver import (
+    DeepEnsembleSolverInterface,
+    DeepEnsembleSupervisedSolver,
+    DeepEnsemblePINN,
+)
 from .garom import GAROM