[IMP] web: custom_hooks: dynamic inheritable event handling

This commit's intention is to bring class inheritance of event handlers
to components.
Use case:
A component class may want to set generic event handlers for all classes
inheriting from it, in order to set shared event behavior from the start
It is the case in many parts of Odoo, in particular in the cases of fields
which need at least to react on some keyboard event for navigation

The way to implement such a behavior is to make use of the
`useListener` OWL hook, by passing as arguments
event name and the handler function

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