Add bp2build arch-specific paths mutator

Adds deps for properties tagged `android:"path"` within arch, multilib,
and target properties.

Test: build/bazel/ci/bp2build.sh
Test: m nothing
Bug: 185217298
Change-Id: I0230da399d2c4e984b837f69523fa09eadba3ff1
diff --git a/android/arch_test.go b/android/arch_test.go
index 633ddaa..3aa4779 100644
--- a/android/arch_test.go
+++ b/android/arch_test.go
@@ -66,9 +66,9 @@
 			}{},
 			out: &struct {
 				A *string
-				B *string
-				C *string
-				D *string
+				B *string `android:"path"`
+				C *string `android:"path"`
+				D *string `android:"path"`
 			}{},
 			filtered: true,
 		},