Fix go.mod, add go.work to use local versions of the dependent modules.

Test: treehugger, (cd build/soong && go build ./...)
Change-Id: I22fd664b5dcc9f4691c5182fdf0dfe53abc0c584
diff --git a/go.mod b/go.mod
index 7239f6d..a5d9dd5 100644
--- a/go.mod
+++ b/go.mod
@@ -1,21 +1,9 @@
 module android/soong
 
+go 1.19
+
 require (
-  google.golang.org/protobuf v0.0.0
-  github.com/google/blueprint v0.0.0
-  prebuilts/bazel/common/proto/analysis_v2 v0.0.0
-  prebuilts/bazel/common/proto/build v0.0.0 // indirect
+	github.com/google/blueprint v0.0.0
+	google.golang.org/protobuf v0.0.0
+	prebuilts/bazel/common/proto/analysis_v2 v0.0.0
 )
-
-replace (
-  google.golang.org/protobuf v0.0.0 => ../../external/golang-protobuf
-  github.com/google/blueprint v0.0.0 => ../blueprint
-  github.com/google/go-cmp v0.5.5 => ../../external/go-cmp
-  prebuilts/bazel/common/proto/analysis_v2 => ../../prebuilts/bazel/common/proto/analysis_v2
-  prebuilts/bazel/common/proto/build => ../../prebuilts/bazel/common/proto/build
-)
-
-// Indirect deps from golang-protobuf
-exclude github.com/golang/protobuf v1.5.0
-
-go 2.0