adding root .editorconfig file. (demisto#27280)

https://editorconfig.org/

Author: kobymeir

.editorconfig

@@ -0,0 +1,23 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_size = 4
+indent_style = space
+insert_final_newline = false
+tab_width = 4
+
+[{*.bash,*.sh,*.zsh}]
+indent_size = 2
+tab_width = 2
+
+[{*.py,*.pyw}]
+max_line_length = 130
+
+[{*.yaml,*.yml}]
+indent_size = 2
+max_line_length = off
+
+[{*.md,*.markdown}]
+max_line_length = off