Prism Show Gem Requirements and Prompt when Adding Gems with Requirements (#1478)

* Added requirements section to gem inspector

* Added Dialog when configuring for gems with extra requirements

Code/Tools/ProjectManager/Source/GemCatalog/GemRequirementDelegate.h

@@ -0,0 +1,37 @@
+/*
+* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
+* its licensors.
+*
+* For complete copyright and license terms please see the LICENSE at the root of this
+* distribution (the "License"). All use of this software is governed by the License,
+* or, if provided, by the license below or the license accompanying this file. Do not
+* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*
+*/
+
+#pragma once
+
+#if !defined(Q_MOC_RUN)
+#include <GemCatalog/GemItemDelegate.h>
+#endif
+
+
+namespace O3DE::ProjectManager
+{
+    class GemRequirementDelegate
+        : public GemItemDelegate
+    {
+        Q_OBJECT // AUTOMOC
+
+    public:
+        explicit GemRequirementDelegate(QAbstractItemModel* model, QObject* parent = nullptr);
+        ~GemRequirementDelegate() = default;
+
+        void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& modelIndex) const override;
+        bool editorEvent(QEvent* event, QAbstractItemModel* model, const QStyleOptionViewItem& option, const QModelIndex& modelIndex) override;
+
+        const QColor m_backgroundColor = QColor("#444444"); // Outside of the actual gem item
+        const QColor m_itemBackgroundColor = QColor("#393939"); // Background color of the gem item
+    };
+} // namespace O3DE::ProjectManager