Make "Loading interface..." translatable

src/locales/en.json

@@ -48,6 +48,10 @@
       "string": "Please update your browser.",
       "description": "Additional text that appears when the user's browser does not support required features."
     },
+    "importingInterface": {
+      "string": "Loading options...",
+      "description": "Can appear when downloading additional UI scripts. Typically never seen."
+    },
     "reportBug": {
       "string": "Report Bug"
     },

src/p4/P4.svelte

@@ -173,7 +173,7 @@
   {#if projectData}
     {#await getPackagerOptionsComponent()}
       <Section center>
-        <Progress text="Loading interface..." />
+        <Progress text={$_('p4.importingInterface')} />
       </Section>
     {:then { default: PackagerOptions }}
       <div in:fade>