add a make target with script to set version in corresponding files

[sunya-ch]

Currently we manually increase the version on main.

Example PRs for increment of v1.2.4:

• e4b4fa7
• 0e00ebe

These PRs include changes in

• .github/workflows - for build/push image in main branch and for tests in patch of specific branch version
• Makefile
• README
• config/manager/kustomization.yaml
• config/samples/config.yaml
• config/samples/kustomization.yaml
• daemon/Makefile
• daemon/dockerfiles/Dockerfile.kbuilder
• connection-check/concheck.yaml
• controllers/vars/vars.go - for default multi-nicd image

We must have a file VERSION to keep the current version.
Then, we would like to have a script to update the version and edit the above files with a single command like make set-version.

[sunya-ch]

Example for create new version script: https://github.com/kiali/kiali-operator/blob/master/manifests/create-new-version.sh