Add SlicerEditor Extension (#2077)

* Add files via upload

* Delete SlicerEditor.jason

* Add files via upload

* Update SlicerEditor.json

* Fix typo in SlicerEditor.json

* Update SlicerEditor.json

* Update SlicerEditor.json

* Update SlicerEditor.json

* Update SlicerEditor.json

---------

Co-authored-by: Sara Rolfe <sara.rolfe@seattlechildrens.org>

Author: oothomas

SlicerEditor.json

@@ -0,0 +1,8 @@
+{
+  "$schema": "https://raw.githubusercontent.com/Slicer/Slicer/main/Schemas/slicer-extension-catalog-entry-schema-v1.0.0.json#",
+  "build_dependencies": [],
+  "build_subdirectory": ".",
+  "category": "Python Scripting",
+  "scm_revision": "main",
+  "scm_url": "https://github.com/SlicerMorph/SlicerEditor"
+}