rusty-gd: move gddi-macros to gddi/macros

Bug: 171749953
Tag: #gd-refactor
Test: gd/cert/run --rhost
Change-Id: I30b553a92539212bbe7456c3f4794706d3e8950e

system/gd/rust/gddi-macros/Android.bp

-rust_proc_macro {
-    name: "libgddi_macros",
-    crate_name: "gddi_macros",
-    srcs: ["src/lib.rs"],
-    edition: "2018",
-    rustlibs: [
-        "libproc_macro2",
-        "libquote",
-        "libsyn",
-    ],
-}

system/gd/rust/gddi/Android.bp

@@ -7,3 +7,15 @@ rust_library {
     proc_macros: ["libgddi_macros"],
     rustlibs: ["libtokio"],
 }
+
+rust_proc_macro {
+    name: "libgddi_macros",
+    crate_name: "gddi_macros",
+    srcs: ["macros/lib.rs"],
+    edition: "2018",
+    rustlibs: [
+        "libproc_macro2",
+        "libquote",
+        "libsyn",
+    ],
+}