feat: initialize warpbox.dev project structure and backend

Initialize the repository with the core Go backend architecture and a frontend mockup for warpbox.dev, a self-hosted file-sharing application.

- Set up Go backend modules for configuration, HTTP server, middleware, handlers, and templates.
- Add local development scripts, environment templates, and basic project configuration.
- Include a React-based frontend mockup under the docs directory.

backend/libs/helpers/human_test.go

@@ -0,0 +1,19 @@
+package helpers
+
+import "testing"
+
+func TestFormatBytes(t *testing.T) {
+	tests := map[int64]string{
+		0:          "0 B",
+		512:        "512 B",
+		1024:       "1.0 KiB",
+		1536:       "1.5 KiB",
+		1073741824: "1.0 GiB",
+	}
+
+	for input, want := range tests {
+		if got := FormatBytes(input); got != want {
+			t.Fatalf("FormatBytes(%d) = %q, want %q", input, got, want)
+		}
+	}
+}