Add some configurations

.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+charset = utf-8
+trim_trailing_whitespace = false
+insert_final_newline = true

.gitattributes

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+/.github export-ignore
+/.gitignore export-ignore
+/CONTRIBUTING.md export-ignore
+/.markdownlint.json export-ignore
+/.editorconfig export-ignore

.markdownlint.json

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+{
+    "default": true,
+    "MD004": false,
+    "MD007": false,
+    "MD013": {
+        "line_length": 1000
+    },
+    "MD024": false,
+    "MD032": false
+}