Adding a GPX icon

src/components/tree/Tree.tsx

@@ -3,7 +3,7 @@ import styled from '@suid/material/styles/styled';
 import { Component, JSXElement, Show } from 'solid-js';
 
 interface Props {
-  title: string;
+  title: string | JSXElement;
   content: JSXElement | undefined;
   subTree: JSXElement | undefined;
 }
@@ -11,7 +11,7 @@ interface Props {
 const Item = styled(Paper)(({ theme }) => ({
   ...theme.typography.body2,
   padding: theme.spacing(1),
-  textAlign: 'center',
+  textAlign: 'left',
   color: theme.palette.text.secondary,
 }));