make init file common on all repos

taipy/__init__.py

@@ -1,4 +1,24 @@
-from .core import *
-from .gui import Gui
-from .rest import Rest
-from ._run import _run as run
+# Copyright 2022 Avaiga Private Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+# an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations under the License.
+
+from importlib.util import find_spec
+
+if find_spec('taipy.core'):
+    from taipy.core import *
+
+if find_spec('taipy.gui'):
+    from taipy.gui import Gui
+
+if find_spec('taipy.rest'):
+    from taipy.rest import Rest
+
+if find_spec('taipy._run'):
+    from taipy._run import _run as run