Add Initial Gem Repository Management Screen (#4172)

* Adds the gem repo screen with the UI built but with mocked data and not connected to the o3de scripts

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

* Changed name of added to enabled, disabled define, removed unused functions

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

* Added eof nl to qss

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

Code/Tools/ProjectManager/Source/PythonBindingsInterface.h

@@ -17,6 +17,7 @@
 #include <GemCatalog/GemInfo.h>
 #include <ProjectInfo.h>
 #include <ProjectTemplateInfo.h>
+#include <GemRepo/GemRepoInfo.h>
 
 namespace O3DE::ProjectManager
 {
@@ -56,14 +57,14 @@ namespace O3DE::ProjectManager
 
         /**
          * Get info about a Gem 
-         * @param path the absolute path to the Gem 
+         * @param projectPath the absolute path to the Gem 
          * @return an outcome with GemInfo on success 
          */
         virtual AZ::Outcome<GemInfo> GetGemInfo(const QString& path, const QString& projectPath = {}) = 0;
 
         /**
          * Get all available gem infos. This concatenates gems registered by the engine and the project.
-         * @param path The absolute path to the project.
+         * @param projectPath The absolute path to the project.
          * @return A list of gem infos.
          */
         virtual AZ::Outcome<QVector<GemInfo>, AZStd::string> GetAllGemInfos(const QString& projectPath) = 0;
@@ -155,6 +156,14 @@ namespace O3DE::ProjectManager
          * @return an outcome with ProjectTemplateInfos on success 
          */
         virtual AZ::Outcome<QVector<ProjectTemplateInfo>> GetProjectTemplates(const QString& projectPath = {}) = 0;
+
+        // Gem Repos
+
+        /**
+         * Get all available gem repo infos. Gathers all repos registered with the engine.
+         * @return A list of gem repo infos.
+         */
+        virtual AZ::Outcome<QVector<GemRepoInfo>, AZStd::string> GetAllGemRepoInfos() = 0;
     };
 
     using PythonBindingsInterface = AZ::Interface<IPythonBindings>;