Trim profile names when setting them

ts/util/whitespaceStringUtil.ts

@@ -0,0 +1,47 @@
+// Copyright 2022 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+const WHITESPACE = new Set([
+  ' ',
+  '\u200E', // left-to-right mark
+  '\u200F', // right-to-left mark
+  '\u2007', // figure space
+  '\u200B', // zero-width space
+  '\u2800', // braille blank
+]);
+
+export function trim(str: string): string {
+  let start = 0;
+  let end = str.length - 1;
+
+  for (start; start < str.length; start += 1) {
+    const char = str[start];
+    if (!WHITESPACE.has(char)) {
+      break;
+    }
+  }
+
+  for (end; end > 0; end -= 1) {
+    const char = str[end];
+    if (!WHITESPACE.has(char)) {
+      break;
+    }
+  }
+
+  if (start > 0 || end < str.length - 1) {
+    return str.substring(start, end + 1);
+  }
+
+  return str;
+}
+
+export function isWhitespace(str: string): boolean {
+  for (let i = 0; i < str.length; i += 1) {
+    const char = str[i];
+    if (!WHITESPACE.has(char)) {
+      return false;
+    }
+  }
+
+  return true;
+}