git: Add editorconfig.

.editorconfig

@@ -0,0 +1,12 @@
+# Pamhyr .editorconfig
+
+root = true
+
+[*.py]
+charset = utf-8
+indent_style = space
+indent_size = 4
+tab_width = 8
+end_of_line = lf
+trim_trailing_whitespace = true
+insert_final_newline = true