Async downloader, better Proton support (#183)

* feat: async downloader + other fixes

* feat: windows command parsing + use library path for install path

* feat: better proton support

* feat: style fixes and store button now uses in-app

* feat: emulator rename + umu emulator fix

* feat: bring process creation inline with docs

* fix: clippy

main/components/DefaultProtonButton.vue

@@ -0,0 +1,30 @@
+<script setup lang="ts">
+import { StarIcon } from "@heroicons/vue/24/solid";
+import { invoke } from "@tauri-apps/api/core";
+
+const props = defineProps<{
+  path?: string;
+}>();
+
+const model = defineModel<string | undefined>({ required: true });
+
+const isDefault = computed(() => props.path == model.value);
+
+async function setDefault() {
+  if (!props.path) return;
+  await invoke("set_default", { path: props.path });
+  model.value = props.path;
+}
+</script>
+
+<template>
+  <button
+    :class="['p-0.5 rounded-full', isDefault ? 'bg-blue-500' : 'bg-zinc-800']"
+    @click="setDefault"
+    :disabled="!props.path"
+  >
+    <StarIcon
+      :class="['size-[0.7rem]', isDefault ? 'text-zinc-100' : 'text-zinc-100']"
+    />
+  </button>
+</template>