Add editorconfig file and check in pipeline

.drone.yml

@@ -3,6 +3,8 @@ kind: pipeline
 name: default
 
 steps:
+- name: Check editorconfig compliance
+  image: mstruebing/editorconfig-checker
 - name: test
   image: rust:1.60
   commands:

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig helps developers define and maintain consistent
+# coding styles between different editors and IDEs
+# editorconfig.org
+
+root = true
+
+[*.rs]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 4