install reorg/cleanup

Signed-off-by: Esteban Papp <81431996+amznestebanpapp@users.noreply.github.com>

python/CMakeLists.txt

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+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+# common files to all platforms
+ly_install_files(
+    FILES
+        get_python.cmake
+        readme.md
+        requirements.txt
+    DESTINATION python
+)
+
+# platform specific files (they are PROGRAMS)
+include(Platform/${PAL_PLATFORM_NAME}/install_files_${PAL_PLATFORM_NAME_LOWERCASE}.cmake)
+ly_install_files(
+    FILES ${install_files}
+    PROGRAMS
+    DESTINATION python
+)

python/Platform/Linux/install_files_linux.cmake

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+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+set(install_files
+    get_python.sh
+    pip.sh
+    python.sh
+)

python/Platform/Mac/install_files_mac.cmake

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+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+set(install_files
+    get_python.sh
+    pip.sh
+    python.sh
+)

python/Platform/Windows/install_files_windows.cmake

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+#
+# Copyright (c) Contributors to the Open 3D Engine Project.
+# For complete copyright and license terms please see the LICENSE at the root of this distribution.
+#
+# SPDX-License-Identifier: Apache-2.0 OR MIT
+#
+#
+
+set(install_files
+    get_python.bat
+    pip.cmd
+    python.cmd
+)