added rba-pinn (#308)

* added rba-pinn
* changes to loss logger
* tests
* doc

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Co-authored-by: Monthly Tag bot <mtbot@noreply.github.com>
Co-authored-by: Nicola Demo <demo.nicola@gmail.com>

pina/solvers/pinns/__init__.py

@@ -5,6 +5,7 @@ __all__ = [
     "CausalPINN",
     "CompetitivePINN",
     "SAPINN",
+    "RBAPINN",
 ]
 
 from .basepinn import PINNInterface
@@ -13,3 +14,4 @@ from .gpinn import GPINN
 from .causalpinn import CausalPINN
 from .competitive_pinn import CompetitivePINN
 from .sapinn import SAPINN
+from .rbapinn import RBAPINN