feat(dev-infra): improve //:.editorconfig alignment with formatters (#1409)

This change updates //:.editorconfig to improve the alignment between
its configuration settings and the output from formatters, in an effort
to reduce format cycles during iteration.

Change-Id: I8e1af63a961bc8ca29d8b4a41f80ae7251a96f26

.editorconfig

@@ -4,5 +4,13 @@ root = true
 
 [*]
 end_of_line = lf
+indent_size = 4
+indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true
+
+[*.{graphql,js,json,nix,ts,tsx,yaml,yml}]
+indent_size = 2
+
+[{Makefile,go.mod,go.sum,*.go}]
+indent_style = tab