Factor out LabelLike to share common label styles (#3510)

This PR factors out a new `LabelLike` component to share common styles
between the `Label` and `HighlightedLabel` components.

Release Notes:

- N/A

crates/ui2/src/components/label/label.rs

@@ -0,0 +1,48 @@
+use gpui::WindowContext;
+
+use crate::{prelude::*, LabelCommon, LabelLike, LabelSize, LineHeightStyle};
+
+#[derive(IntoElement)]
+pub struct Label {
+    base: LabelLike,
+    label: SharedString,
+}
+
+impl Label {
+    pub fn new(label: impl Into<SharedString>) -> Self {
+        Self {
+            base: LabelLike::new(),
+            label: label.into(),
+        }
+    }
+}
+
+impl LabelCommon for Label {
+    fn size(mut self, size: LabelSize) -> Self {
+        self.base = self.base.size(size);
+        self
+    }
+
+    fn line_height_style(mut self, line_height_style: LineHeightStyle) -> Self {
+        self.base = self.base.line_height_style(line_height_style);
+        self
+    }
+
+    fn color(mut self, color: Color) -> Self {
+        self.base = self.base.color(color);
+        self
+    }
+
+    fn strikethrough(mut self, strikethrough: bool) -> Self {
+        self.base = self.base.strikethrough(strikethrough);
+        self
+    }
+}
+
+impl RenderOnce for Label {
+    type Rendered = LabelLike;
+
+    fn render(self, _cx: &mut WindowContext) -> Self::Rendered {
+        self.base.child(self.label)
+    }
+}