fix: add git2r_proxy.h

Author: glichtner

src/git2r_clone.c

@@ -23,6 +23,7 @@
 #include "git2r_clone.h"
 #include "git2r_cred.h"
 #include "git2r_error.h"
+#include "git2r_proxy.h"
 #include "git2r_transfer.h"
 
 /**

src/git2r_push.c

@@ -22,6 +22,7 @@
 #include "git2r_arg.h"
 #include "git2r_cred.h"
 #include "git2r_error.h"
+#include "git2r_proxy.h"
 #include "git2r_push.h"
 #include "git2r_repository.h"
 #include "git2r_signature.h"

src/git2r_remote.c

@@ -22,6 +22,7 @@
 #include "git2r_arg.h"
 #include "git2r_cred.h"
 #include "git2r_error.h"
+#include "git2r_proxy.h"
 #include "git2r_remote.h"
 #include "git2r_repository.h"
 #include "git2r_S3.h"