REORG: include: move server.h to haproxy/server{,-t}.h

extern struct dict server_name_dict was moved from the type file to the
main file. A handful of inlined functions were moved at the bottom of
the file. Call places were updated to use server-t.h when relevant, or
to simply drop the entry when not needed.
diff --git a/src/proxy.c b/src/proxy.c
index 173f17d..12cbd46 100644
--- a/src/proxy.c
+++ b/src/proxy.c
@@ -31,6 +31,7 @@
 #include <haproxy/peers.h>
 #include <haproxy/pool.h>
 #include <haproxy/proxy.h>
+#include <haproxy/server-t.h>
 #include <haproxy/stats-t.h>
 #include <haproxy/stream_interface.h>
 #include <haproxy/task.h>
@@ -43,7 +44,6 @@
 
 #include <haproxy/fd.h>
 #include <haproxy/proto_tcp.h>
-#include <proto/server.h>
 #include <haproxy/signal.h>
 #include <proto/stream.h>