remove nip05 login, use nostrconnect instead

src/app/components/QRCode.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+  import QRCode from "qrcode"
+  import {onMount} from "svelte"
+  import Button from "@lib/components/Button.svelte"
+  import {clip} from "@app/toast"
+
+  export let code
+
+  let canvas, wrapper
+  let scale = 0.1
+  let height = null
+
+  onMount(() => {
+    QRCode.toCanvas(canvas, code)
+
+    const wrapperRect = wrapper.getBoundingClientRect()
+    const canvasRect = canvas.getBoundingClientRect()
+
+    scale = wrapperRect.width / (canvasRect.width * 10)
+    height = canvasRect.width * 10 * scale
+  })
+</script>
+
+<Button on:click={() => clip(code)}>
+  <div bind:this={wrapper} style={`height: ${height}px`}>
+    <canvas
+      class="rounded-box"
+      bind:this={canvas}
+      style={`transform-origin: top left; transform: scale(${scale}, ${scale})`} />
+  </div>
+</Button>