chore: replace dtslint with dtslint-like rules in tslint-etc (ReactiveX#5123)

* chore: replace dtslint with dtslint-like rules in tslint-etc

* chore: account for renamed directory

* chore: ignore import location dirs only at root

* chore: fix dtslint expectation typos

* chore: bump version for no-dtslint-typo fix

* chore: add deprecation test for of

Author: cartant

.gitignore

@@ -21,11 +21,12 @@ spec-build/
 .out/
 .tmp/
 
-ajax/
-fetch/
-operators/
-testing/
-webSocket/
+# Import location artifacts
+/ajax/
+/fetch/
+/operators/
+/testing/
+/webSocket/
 
 # Misc
 npm-debug.log