{or,ir}: add .editorconfig & .gitattributes for copying to the two subset repos

ir/.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+trim_trailing_whitespace = false
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2

ir/.gitattributes

@@ -0,0 +1 @@
+* text=auto linguist-detectable

or/.editorconfig

@@ -0,0 +1,8 @@
+root = true
+
+[*]
+trim_trailing_whitespace = false
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 2

or/.gitattributes

@@ -0,0 +1 @@
+* text=auto linguist-detectable