Summary:
For a small cmake test project which just has a couple of targets:
- test_cmake_targets
- test_cmake_targets/unittests/test1
- test_cmake_targets/unittests/test2
- test_cmake_targets/unittests/test3
- test_cmake_targets/unittests/test4
- test_cmake_targets/utils/util1
- test_cmake_targets/utils/util2
- test_cmake_targets/utils/util3
- test_cmake_targets/utils/util4

but in the "Run -> Configure Launches -> ... -> Project target:" combobox they appear as:
- test_cmake_targets
- test_cmake_targets/unittests/test2
- test_cmake_targets/unittests/test4
- test_cmake_targets/unittests/test3
- test_cmake_targets/unittests/test1
- test_cmake_targets/utils/util2
- test_cmake_targets/utils/util1
- test_cmake_targets/utils/util3
- test_cmake_targets/utils/util4

as the order confuses me greatly (especially for huge projects) and even changes
in different kdevelop sessions/executions -> sort them.

Reviewers: #kdevelop, kfunk

Reviewed By: #kdevelop, kfunk

Subscribers: kfunk, kdevelop-devel

Tags: #kdevelop

Differential Revision: https://phabricator.kde.org/D16003