Make gem tags clickable and filter by their text in the Gem Catalog when clicked

Signed-off-by: nggieber <nggieber@amazon.com>

Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogHeaderWidget.cpp

@@ -439,4 +439,9 @@ namespace O3DE::ProjectManager
     {
         m_filterLineEdit->setText({});
     }
+
+    void GemCatalogHeaderWidget::SetSearchFilter(const QString& filter)
+    {
+        m_filterLineEdit->setText(filter);
+    }
 } // namespace O3DE::ProjectManager

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

@@ -86,6 +86,9 @@ namespace O3DE::ProjectManager
 
         void ReinitForProject();
 
+    public slots:
+        void SetSearchFilter(const QString& filter);
+
     signals:
         void AddGem();
         void OpenGemsRepo();

Code/Tools/ProjectManager/Source/GemCatalog/GemCatalogScreen.cpp

@@ -54,6 +54,8 @@ namespace O3DE::ProjectManager
         m_gemInspector = new GemInspector(m_gemModel, this);
         m_gemInspector->setFixedWidth(240);
 
+        connect(m_gemInspector, &GemInspector::TagClicked, m_headerWidget, &GemCatalogHeaderWidget::SetSearchFilter);
+
         QWidget* filterWidget = new QWidget(this);
         filterWidget->setFixedWidth(240);
         m_filterWidgetLayout = new QVBoxLayout();

Code/Tools/ProjectManager/Source/GemCatalog/GemInspector.cpp

@@ -175,6 +175,7 @@ namespace O3DE::ProjectManager
 
         // Depending gems
         m_dependingGems = new GemsSubWidget();
+        connect(m_dependingGems, &GemsSubWidget::TagClicked, this, [=](const QString& tag){ emit TagClicked(tag); });
         m_mainLayout->addWidget(m_dependingGems);
         m_mainLayout->addSpacing(20);
 

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

@@ -40,6 +40,9 @@ namespace O3DE::ProjectManager
         inline constexpr static const char* s_headerColor = "#FFFFFF";
         inline constexpr static const char* s_textColor = "#DDDDDD";
 
+    signals:
+        void TagClicked(const QString& tag);
+
     private slots:
         void OnSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected);