Silenced warnings for IDs not specified by specifying them

Created by: stefanoborini

Specifies the ids for the plugins. Envisage requires them to be defined, or it will issue a warning that it is using a generated id. It is good practice that we do define them, so a new function has been introduced to create them.

doc/source/api/force_bdss.core_plugins.dummy.dummy_data_source.rst

+force_bdss.core_plugins.dummy.dummy_data_source package
+=======================================================
+
+Submodules
+----------
+
+force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source module
+------------------------------------------------------------------------
+
+.. automodule:: force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source_bundle module
+-------------------------------------------------------------------------------
+
+.. automodule:: force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source_bundle
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source_model module
+------------------------------------------------------------------------------
+
+.. automodule:: force_bdss.core_plugins.dummy.dummy_data_source.dummy_data_source_model
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+
+Module contents
+---------------
+
+.. automodule:: force_bdss.core_plugins.dummy.dummy_data_source
+    :members:
+    :undoc-members:
+    :show-inheritance: