Add editorconfig configuration

.editorconfig

@@ -0,0 +1,25 @@
+# https://editorconfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+end_of_line = lf
+trim_trailing_whitespace = true
+
+[*.py]
+indent_style = space
+indent_size = 4
+
+[*.{yaml,yml,toml,md}]
+indent_style = space
+indent_size = 2
+
+[Dockerfile*]
+indent_style = space
+indent_size = 4
+
+[*.json]
+indent_style = space
+indent_size = 4