Add java-swift language support

Summary: This is a similar hack to what buck did with the javadeprecated client, adding a java_binary so we can get a self-contained set of fbcode deps over to fbandroid as a jar file. I don't love it and would be happy if someone knows an alternative. Moving to xplat was one failed approach I tried. It failed because the swift runtime still requires fbcode's third-party-java.

Reviewed By: cute-jumper

Differential Revision: D68968874

fbshipit-source-id: 1337a92b05929c331c6986fab582a40bad2146c8

Author: ianlevesque

eden/fs/config/eden_config.thrift

@@ -7,6 +7,7 @@
 
 namespace cpp2 facebook.eden
 namespace java com.facebook.eden.thrift
+namespace java.swift com.facebook.eden.thrift.config
 namespace py facebook.eden.eden_config
 namespace py3 eden.fs.config
 namespace hack edenfs.config

eden/fs/service/eden.thrift

@@ -13,6 +13,7 @@ include "thrift/annotation/thrift.thrift"
 
 namespace cpp2 facebook.eden
 namespace java com.facebook.eden.thrift
+namespace java.swift com.facebook.eden.thrift
 namespace py facebook.eden
 namespace py3 eden.fs.service
 namespace hack edenfs.service

eden/fs/service/streamingeden.thrift

@@ -7,6 +7,7 @@
 
 include "eden/fs/service/eden.thrift"
 namespace cpp2 facebook.eden
+namespace java.swift com.facebook.eden.thrift.streaming
 namespace py3 eden.fs.service
 
 enum FsEventType {