refactor/internal (#1216)

* refactor: update import paths in gateway handlers

* refactor: remove obsolete devtools Makefile and README

* build: optimize build process for improved efficiency

* refactor: remove obsolete pkl files related to Matrix and Sonr network configurations

* refactor: move embed code to x/dwn/types

internal/common/ipfs_file.go

@@ -0,0 +1,28 @@
+package common
+
+import (
+	"context"
+
+	"github.com/ipfs/boxo/files"
+)
+
+type file struct {
+	files.File
+	name string
+}
+
+func (f *file) Name() string {
+	return f.name
+}
+
+func NewFile(name string, data []byte) File {
+	return &file{File: files.NewBytesFile(data), name: name}
+}
+
+func (c *client) AddFile(file File) (string, error) {
+	cidFile, err := c.api.Unixfs().Add(context.Background(), file)
+	if err != nil {
+		return "", err
+	}
+	return cidFile.String(), nil
+}