Wrap blueprint_go_binary and bootstrap_go_package into android.Modules

Depending on a blueprint_go_binary from a Soong module requires hacks
that allow Soong to support both blueprint.Module and android.Module.
Wrap the blueprint Go module types with ones that implement
android.Module, and delete all the related hacks.

Bug: 319288033
Test: m checkbuild
Flag: EXEMPT refactor
Change-Id: I9b62b450de09bd10288333fbc66aa71c867ae0b3

golang/Android.bp

@@ -0,0 +1,22 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+bootstrap_go_package {
+    name: "soong-golang",
+    pkgPath: "android/soong/golang",
+    deps: [
+        "blueprint",
+        "blueprint-pathtools",
+        "blueprint-bootstrap",
+        "soong",
+        "soong-android",
+    ],
+    srcs: [
+        "golang.go",
+    ],
+    testSrcs: [
+        "golang_test.go",
+    ],
+    pluginFor: ["soong_build"],
+}