types: update .gitignore and .npmignore

types/.gitignore

@@ -1,4 +1,10 @@
 # Don't track build artifacts
 **/*.js
 **/*.d.ts
-hiring/schemas
+hiring/schemas
+
+# from prior versions
+lib/
+
+# artifact of webpack when building pioneer?
+build/

types/.npmignore

@@ -1,2 +1,6 @@
 # No need to include src in published package
-src/
+src/
+
+# old build artifacts
+lib/
+build/