Update editorconfig to match ktfmt (#912)

I took some options from here: https://github.com/facebook/ktfmt/blob/main/docs/editorconfig/.editorconfig-google

I can copy all of them if we think it makes sense.

Author: runningcode

.editorconfig

@@ -2,11 +2,15 @@ root = true
 
 [*]
 indent_style = space
-indent_size = 4
+indent_size = 2
 end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
 insert_final_newline = true
+max_line_length = 100
+ij_continuation_indent_size = 4
+ij_java_names_count_to_use_import_on_demand = 9999
+ij_kotlin_code_style_defaults = KOTLIN_OFFICIAL
 
 [*.md]
 trim_trailing_whitespace = false