What are all the hook types I can use in app.yml

[Ethsim2 (Ethan)]

@Ethsim2

Hooks are points in templates that allow commands to be injected before or after a step labelled with hook:.

From GitHub Repo:

@NateDhaliwal

Execute commands before and after a specific command by defining a hook.

how about?

Hooks let you execute custom commands before or after a specific build step, by defining before_<name>: or after_<name>: corresponding to a hook: <name> label in a template.