Move okhttp client from http-api

The client has been recreated with a new builder off of the http-api
client for awhile anyway since runelite-client has multiple other
requirements (caching, tls, etc). This fully moves creation of the
okhttp client into both http-service and runelite-client separately.

I've kept the CLIENT field in http-api for now since a few external
plugins depend on it currently.

http-service/src/main/resources/application.yaml

@@ -33,6 +33,9 @@ mongo:
   database: runelite
 
 runelite:
+  version: @project.version@
+  commit: @git.commit.id.abbrev@
+  dirty: @git.dirty@
   # Twitter client for feed
   twitter:
     consumerkey: