Change Library object use mediaCategory, allow adding new manual folder path, validate folder paths, fix Watcher re-init after folder path updates

client/components/icons/comic-svg.vue

@@ -0,0 +1,16 @@
+<template>
+  <svg viewBox="0 0 24 24">
+    <path fill="currentColor" d="M6,19L9,15.14L11.14,17.72L14.14,13.86L18,19H6M6,4H11V12L8.5,10.5L6,12M18,2H6A2,2 0 0,0 4,4V20A2,2 0 0,0 6,22H18A2,2 0 0,0 20,20V4A2,2 0 0,0 18,2Z" />
+  </svg>
+</template>
+
+<script>
+export default {
+  data() {
+    return {}
+  },
+  computed: {},
+  methods: {},
+  mounted() {}
+}
+</script>