Cardano Updates

This commit adds a function which can extend an `EpochInfo` linearly
given a starting point. This is needed to put in place a patch for a bug
that arose in the Alonzo era, where the `EpochInfo` was too generous in
translating slots.

In order to support this, this adds an additional function
`epochInfoSlotLength`, which returns the 'SlotLength' for the given
slot.

Converting to hex prior to decoding ensures correct symbol range.

to prevent standard `Prelude` imports

and thus the dependency on cardano-prelude

and thus the dependency on cardano-prelude

and thus the dependency on cardano-prelude

The dependency on `Test.Cardano.Prelude` is still remaining

making cardano-binary package no longer depend on cardano-prelude

except for `Panic`

with slightly modified imports in order to not depend on cardano-prelude
package