Move directory structure

Author: Meinersbur

.buildbot/common/worker.py .ci/buildbot/worker.py.buildbot/common/worker.py renamed to .ci/buildbot/worker.py

@@ -7,7 +7,7 @@
 # Adapt to location in source tree
 llvmsrcroot = os.path.normpath(f"{__file__}/../../..")
 
-sys.path.insert(0, os.path.join(llvmsrcroot, '.buildbot/common'))
+sys.path.insert(0, os.path.join(llvmsrcroot, '.ci/buildbot'))
 import worker