Rename the [Ee]xts dir to ext (#38852)

**WARNING:** This PR will probably blow up all in-flight PRs

at some point in the early days of CmdPal, two of us created seperate
`Exts` and `exts` dirs. Depending on what the casing was on the branch
that you checked one of those out from, it'd get stuck like that on your
PC forever.

Windows didn't care, so we never noticed.

But GitHub does care, and now browsing the source on GitHub is basically
impossible.

Closes #38081

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Helpers/ResultHelper.cs

@@ -0,0 +1,53 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Globalization;
+using System.IO;
+using Microsoft.CommandPalette.Extensions.Toolkit;
+
+namespace Microsoft.CmdPal.Ext.TimeDate.Helpers;
+
+internal static class ResultHelper
+{
+    /// <summary>
+    /// Get the string based on the requested type
+    /// </summary>
+    /// <param name="isSystemTimeDate">Does the user search for system date/time?</param>
+    /// <param name="stringId">Id of the string. (Example: `MyString` for `MyString` and `MyStringNow`)</param>
+    /// <param name="stringIdNow">Optional string id for now case</param>
+    /// <returns>The string from the resource file, or <see cref="string.Empty"/> otherwise.</returns>
+    internal static string SelectStringFromResources(bool isSystemTimeDate, string stringId, string stringIdNow = default)
+    {
+        return !isSystemTimeDate
+            ? Resources.ResourceManager.GetString(stringId, CultureInfo.CurrentUICulture) ?? string.Empty
+            : !string.IsNullOrEmpty(stringIdNow)
+                ? Resources.ResourceManager.GetString(stringIdNow, CultureInfo.CurrentUICulture) ?? string.Empty
+                : Resources.ResourceManager.GetString(stringId + "Now", CultureInfo.CurrentUICulture) ?? string.Empty;
+    }
+
+    public static IconInfo TimeIcon { get; } = new IconInfo("\uE823");
+
+    public static IconInfo CalendarIcon { get; } = new IconInfo("\uE787");
+
+    public static IconInfo TimeDateIcon { get; } = new IconInfo("\uEC92");
+
+    /// <summary>
+    /// Gets a result with an error message that only numbers can't be parsed
+    /// </summary>
+    /// <returns>Element of type <see cref="Result"/>.</returns>
+    internal static ListItem CreateNumberErrorResult() => new ListItem(new NoOpCommand())
+    {
+        Title = Resources.Microsoft_plugin_timedate_ErrorResultTitle,
+        Subtitle = Resources.Microsoft_plugin_timedate_ErrorResultSubTitle,
+        Icon = IconHelpers.FromRelativePaths("Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.light.png", "Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.dark.png"),
+    };
+
+    internal static ListItem CreateInvalidInputErrorResult() => new ListItem(new NoOpCommand())
+    {
+        Title = Resources.Microsoft_plugin_timedate_InvalidInput_ErrorMessageTitle,
+        Subtitle = Resources.Microsoft_plugin_timedate_InvalidInput_ErrorMessageSubTitle,
+        Icon = IconHelpers.FromRelativePaths("Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.light.png", "Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.dark.png"),
+    };
+}