Add stub for doll-master and doll services, add required vendored libs

vendor/github.com/carlmjohnson/requests/body.go

@@ -0,0 +1,77 @@
+package requests
+
+import (
+	"bytes"
+	"io"
+	"net/url"
+	"os"
+	"strings"
+)
+
+// BodyGetter provides a Builder with a source for a request body.
+type BodyGetter = func() (io.ReadCloser, error)
+
+// BodyReader is a BodyGetter that returns an io.Reader.
+func BodyReader(r io.Reader) BodyGetter {
+	return func() (io.ReadCloser, error) {
+		if rc, ok := r.(io.ReadCloser); ok {
+			return rc, nil
+		}
+		return rc(r), nil
+	}
+}
+
+// BodyWriter is a BodyGetter that pipes writes into a request body.
+func BodyWriter(f func(w io.Writer) error) BodyGetter {
+	return func() (io.ReadCloser, error) {
+		r, w := io.Pipe()
+		go func() {
+			var err error
+			defer func() {
+				w.CloseWithError(err)
+			}()
+			err = f(w)
+		}()
+		return r, nil
+	}
+}
+
+// BodyBytes is a BodyGetter that returns the provided raw bytes.
+func BodyBytes(b []byte) BodyGetter {
+	return func() (io.ReadCloser, error) {
+		return rc(bytes.NewReader(b)), nil
+	}
+}
+
+// BodySerializer is a BodyGetter
+// that uses the provided [Serializer]
+// to build the body of a request from v.
+func BodySerializer(s Serializer, v any) BodyGetter {
+	return func() (io.ReadCloser, error) {
+		b, err := s(v)
+		if err != nil {
+			return nil, err
+		}
+		return rc(bytes.NewReader(b)), nil
+	}
+}
+
+// BodyJSON is a [BodySerializer]
+// that uses [JSONSerializer] to marshal the object.
+func BodyJSON(v any) BodyGetter {
+	return BodySerializer(JSONSerializer, v)
+}
+
+// BodyForm is a BodyGetter that builds an encoded form body.
+func BodyForm(data url.Values) BodyGetter {
+	return func() (r io.ReadCloser, err error) {
+		return rc(strings.NewReader(data.Encode())), nil
+	}
+}
+
+// BodyFile is a BodyGetter that reads the provided file path.
+func BodyFile(name string) BodyGetter {
+	return func() (r io.ReadCloser, err error) {
+		return os.Open(name)
+	}
+}