refactor: clean up imports and move logprobToColor function to utils

src/utils/logprob.tsx

@@ -0,0 +1,14 @@
+const logprobToColor = (logprob: number) => {
+  // 将logprob转换为百分比
+  const percent = Math.exp(logprob) * 100;
+
+  // 计算颜色值
+  // 绿色的RGB值为(0, 255, 0)，红色的RGB值为(255, 0, 0)
+  const red = Math.round(255 * (1 - percent / 100));
+  const green = Math.round(255 * (percent / 100));
+  const color = `rgba(${red}, ${green}, 0, 0.5)`;
+
+  return color;
+};
+
+export default logprobToColor;