Explore adding configurable http timeouts

[Racer159]

Is your feature request related to a problem? Please describe.

We should explore adding configurable timeouts to Zarf's operations so that operations can be optimized for different environments that may be more austere.

Describe the solution you'd like

Ideally there would be a way to configure the default Transport timeouts that are used across Zarf - we should likely construct a version of Transport that we can use throughout the application and let these be configured through env vars or other configuration.

Describe alternatives you've considered

We could leave the timeouts as is, but this may reduce some of Zarf's applicability to very austere environments.

Additional context

This came out of discussions on #2319 when adding an http request header timeout.

[Noxsios]

Closed by #2345