Add initial img node

internal/module/scrn/weather.jsx

···
   }
 
   return <flex>
+    <img src="scrn/weather/cloudy.png" />
     {inner}
   </flex>
 }

internal/tree/img.go

···
+package tree
+
+import (
+	"image"
+
+	"github.com/go-viper/mapstructure/v2"
+)
+
+type ImgAttrs struct {
+	Src string `mapstructure:"src"`
+}
+
+type ImgNode struct {
+	ImgAttrs
+	Rect  image.Rectangle
+	Style NodeStyle
+}
+
+func newImgNode(n *node, r image.Rectangle) (*ImgNode, error) {
+	in := &ImgNode{
+		Rect:  r,
+		Style: n.Style,
+	}
+
+	if err := mapstructure.Decode(&n.Attrs, &in.ImgAttrs); err != nil {
+		return nil, err
+	}
+
+	return in, nil
+}
+
+func (n *ImgNode) Type() NodeType {
+	return NodeTypeImg
+}
+
+func (n *ImgNode) Bounds() image.Rectangle {
+	return n.Rect
+}
+
+func (n *ImgNode) GetStyle() NodeStyle {
+	return n.Style
+}

internal/tree/node.go

···
 		return newFillNode(n, nr)
 	case NodeTypeText:
 		return newTextNode(n, nr)
+	case NodeTypeImg:
+		return newImgNode(n, nr)
 	default:
 		return nil, ErrUnknownNodeType
 	}

internal/tree/tree.go

···
 	NodeTypeFlex NodeType = "flex"
 	NodeTypeText NodeType = "text"
 	NodeTypeFill NodeType = "fill"
+	NodeTypeImg  NodeType = "img"
 )
 
 var (