treewide: remove inclusions of storage_proxy.hh from headers

storage_proxy.hh is huge and includes many headers itself, so
remove its inclusions from headers and re-add smaller headers
where needed (and storage_proxy.hh itself in source files that
need it).

Ref #1.

db/view/view.cc

@@ -70,6 +70,7 @@
 #include "mutation_partition.hh"
 #include "service/migration_manager.hh"
 #include "service/storage_service.hh"
+#include "service/storage_proxy.hh"
 #include "view_info.hh"
 #include "view_update_checks.hh"
 #include "types/user.hh"