Add editor style and pre-commit hook

Author: rocky

.editorconfig

@@ -0,0 +1,28 @@
+# THis is an EditorConfig file
+# https://EditorConfig.org
+
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = tab
+indent_size = 4
+insert_final_newline = true
+
+[*.yml]
+indent_style = space
+indent_size = 2
+end_of_line = lf
+insert_final_newline = true
+
+[*.py]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+insert_final_newline = true
+
+# Tab indentation (no size specified)
+[Makefile]
+indent_style = tab

.pre-commit-config.yaml

@@ -0,0 +1,11 @@
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.3.0
+    hooks:
+    -   id: check-yaml
+    -   id: end-of-file-fixer
+    -   id: trailing-whitespace
+-   repo: https://github.com/psf/black
+    rev: 19.3b0
+    hooks:
+    -   id: black