test-js: Use prettier and format all files

Author: https://github.com/mattco98
Commit: 6d58c48c2f
Pull-request: https://github.com/SerenityOS/serenity/pull/2689
Reviewed-by: https://github.com/linusg

Libraries/LibJS/Tests/string-escapes.js

@@ -1,17 +1,17 @@
-load("test-common.js")
+load("test-common.js");
 
 try {
-    assert("\x55" === "U");
-    assert("\X55" === "X55");
-    assert(`\x55` === "U");
-    assert(`\X55` === "X55");
+  assert("\x55" === "U");
+  assert("X55" === "X55");
+  assert(`\x55` === "U");
+  assert(`\X55` === "X55");
 
-    assert("\u26a0" === "⚠");
-    assert(`\u26a0` === "⚠");
-    assert("\u{1f41e}" === "🐞");
-    assert(`\u{1f41e}` === "🐞");
-    
-    console.log("PASS");
+  assert("\u26a0" === "⚠");
+  assert(`\u26a0` === "⚠");
+  assert("\u{1f41e}" === "🐞");
+  assert(`\u{1f41e}` === "🐞");
+
+  console.log("PASS");
 } catch (e) {
-    console.log("FAIL: " + e);
+  console.log("FAIL: " + e);
 }