CmdPal: Add history to the new run page (#40427)

_⚠️ targets #39955_

This adds history support to the new run page.

* It'll initialize the history with the history from the run dialog, if
there is any.
* Any new commands that are run, or files/dirs that are opened will also
get added to the history
* history will persist across reboots

src/modules/cmdpal/Microsoft.Terminal.UI/RunHistory.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#include "RunHistory.g.h"
+#include "types.h"
+
+namespace winrt::Microsoft::Terminal::UI::implementation
+{
+    struct RunHistory
+    {
+        RunHistory() = default;
+        static winrt::Windows::Foundation::Collections::IVector<hstring> CreateRunHistory();
+
+    private:
+        winrt::Windows::Foundation::Collections::IVector<hstring> _mruHistory;
+    };
+}
+
+namespace winrt::Microsoft::Terminal::UI::factory_implementation
+{
+    BASIC_FACTORY(RunHistory);
+}