Refactor project folder structure for improved organization and scalability

Why these changes are being introduced:
* The restructuring of the app's project directory was required to better accommodate
the introduction of new DSC workflows. As we've started to plan the implementation of
other workflows, it's becoming clear that each workflow is different. This new structure
allows us to standardize the way each workflow is organized, while also providing a space
for workflow-specific assets that may be needed.

How this addresses that need:
* Create folders for each DSC workflow implementation
* Organize workflow and transformer Python files and metadata mapping JSON files
under corresponding workflow dirs
* Clean up imports
* Update DSC version to 1.3

Side effects of this change:
* None. It's worth highlighting that this commit focuses on structural changes
to the app's project directory and does not introduce any functional changes
to the app.

Relevant ticket(s):
* TBD

Author: jonavellecuerdo

dsc/workflows/__init__.py

@@ -5,8 +5,8 @@
 
 from dsc.workflows.archivesspace import ArchivesSpace
 from dsc.workflows.base import Workflow
-from dsc.workflows.base.simple_csv import SimpleCSV
 from dsc.workflows.opencourseware import OpenCourseWare
 from dsc.workflows.sccs import SCCS
+from dsc.workflows.simple_csv import SimpleCSV
 
 __all__ = ["SCCS", "ArchivesSpace", "OpenCourseWare", "SimpleCSV", "Workflow"]

dsc/workflows/archivesspace/__init__.py

@@ -0,0 +1,3 @@
+from dsc.workflows.archivesspace.workflow import ArchivesSpace
+
+__all__ = ["ArchivesSpace"]

…lows/metadata_mapping/archivesspace.json …lows/archivesspace/metadata_mapping.jsondsc/workflows/metadata_mapping/archivesspace.json renamed to dsc/workflows/archivesspace/metadata_mapping.json dsc/workflows/metadata_mapping/archivesspace.json renamed to dsc/workflows/archivesspace/metadata_mapping.json

@@ -5,7 +5,7 @@
 
 from dsc.db.models import ItemSubmissionStatus
 from dsc.item_submission import ItemSubmission
-from dsc.workflows.base.simple_csv import SimpleCSV
+from dsc.workflows.simple_csv import SimpleCSV
 
 logger = logging.getLogger(__name__)
 
@@ -25,7 +25,7 @@ class ArchivesSpace(SimpleCSV):
 
     @property
     def metadata_mapping_path(self) -> str:
-        return "dsc/workflows/metadata_mapping/archivesspace.json"
+        return "dsc/workflows/archivesspace/metadata_mapping.json"
 
     @property
     def output_path(self) -> str: