This PR aims to rename `build-option` to `ephemeral-parameters` based on
#10488 conversation.
`build-option` has been renamed `ephemeral-parameter` and can be used to
define a value for an ephemeral parameter in the template.
`build-options` has been renamed `prompt-ephemeral-parameters` and can
be used to prompt the user to put values for the ephemeral parameters in
the template.
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Co-authored-by: Mathias Fredriksson <mafredri@gmail.com>
Co-authored-by: EdwardAngert <17991901+EdwardAngert@users.noreply.github.com>
Co-authored-by: defelmnq <yvincent@coder.com>
