Bazel and CMake builds
Resolves: ONCPUML-1110, ONCPUML-1109

Co-authored-by: Georgios Pinitas <georgios.pinitas@arm.com>
Co-authored-by: Joe Ramsay <joe.ramsay@arm.com>

Signed-off-by: David Svantesson <david.svantesson@arm.com>
Change-Id: Iea693dbe53bf0af87867d6a9e0d1fd9fbe59ef3a
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8981
Benchmark: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Reviewed-by: Gunes Bayir <gunes.bayir@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/.gitignore b/.gitignore
index 2e7f887..6852bdd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,11 +1,13 @@
 # Library builds
 build/
+bazel-*
 
 # Cscope/Ctags files
 *cscope*
 
 # Text files
 *.txt
+!CMakeLists.txt
 *.xml
 *.embed
 *.diff