feat(CI): Create periodic codeql code scan to detect possible static bugs

[Tomcli]

Which issue is resolved by this Pull Request:
Resolves #

Description of your changes:
Create periodic code scan to give us better insights on what static bugs are in our code. Not all commits need to be scan every time so we are running it as cronjob first to give us some ideas on the initial scan.

Environment tested:

• Python Version (use python --version):
• Tekton Version (use tkn version):
• Kubernetes Version (use kubectl version):
• OS (e.g. from /etc/os-release):

Checklist:

• The title for your pull request (PR) should follow our title convention. Learn more about the pull request title convention used in this repository.

[Tomcli]

/assign @yhwang

[yhwang]

/lgtm

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Tomcli, yhwang

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