chore: add Black configuration and update VSCode settings for formatting

.black

@@ -0,0 +1,14 @@
+[tool.black]
+line-length = 200
+include = '\.pyi?$'
+# 'extend-exclude' excludes files or directories in addition to the defaults
+extend-exclude = '''
+# A regex preceded with ^/ will apply only to files and directories
+# in the root of the project.
+(
+  ^/foo.py    # exclude a file named foo.py in the root of the project
+  | .*_pb2.py  # exclude autogenerated Protocol Buffer files anywhere in the project
+)
+# 'exclude' excludes files or directories from being formatted
+exclude = '''
+'''