Add pre-commit hooks for file checks, ShellCheck, Markdown linting, Bandit security checks, and Terraform format/tflint/docs

[JC-wk]

Is your feature request related to a problem? Please describe.
Add extra formatting and security checks to the pre-commit hooks

Describe the solution you'd like
Add pre-commit hooks for file checks (whitespace etc), ShellCheck, Markdown linting, Bandit security checks, and Terraform format/tflint/docs

Describe alternatives you've considered
N/A

Additional context
Add any other context or screenshots about the feature request here.