Removed application host

src/cpl/application/application_builder.py

@@ -0,0 +1,41 @@
+from typing import Type, Optional
+
+from cpl.application.application_abc import ApplicationABC
+from cpl.application.application_builder_abc import ApplicationBuilderABC
+from cpl.application.application_runtime import ApplicationRuntime
+from cpl.application.startup_abc import StartupABC
+from cpl.configuration import Configuration
+from cpl.dependency_injection import ServiceProvider
+
+
+class ApplicationBuilder(ApplicationBuilderABC):
+
+    def __init__(self, app: Type[ApplicationABC]):
+        """
+        Builder class for application
+        """
+        ApplicationBuilderABC.__init__(self, app)
+        self._startup: Optional[StartupABC] = None
+
+        self._configuration = Configuration()
+        self._runtime = ApplicationRuntime()
+        self._services = ServiceProvider(self._configuration, self._runtime)
+
+    def use_startup(self, startup: Type[StartupABC]):
+        """
+        Sets the used startup class
+        :param startup:
+        :return:
+        """
+        self._startup = startup(self._configuration, self._runtime, self._services)
+
+    def build(self) -> ApplicationABC:
+        """
+        Creates application host and runtime
+        :return:
+        """
+        if self._startup is not None:
+            self._startup.configure_configuration()
+            self._startup.configure_services()
+
+        return self._app(self._configuration, self._runtime, self._services)