Better documentation of `setMinCoinTxOut` and `ensureMinCoinTxOut` in `Cardano.Ledger.Api.Tx.Out`

Document (with Haddock examples) `getMinCoinTxOut` and mention the difference with using `Cardano.Ledger.Api.Tx.Out.setMinCoinSizedTxOut` and `Cardano.Ledger.Api.Tx.Out.setMinCoinTxOut` vs simply setting the min value to what `getMinCoinTxOut` returns. Show examples on how to use it and what the expected result should be.

Start with the Haddock documentation for Cardano.Ledger.Api.Tx.Out, focusing on getMinCoinTxOut, setMinCoinSizedTxOut, and setMinCoinTxOut. Add examples showing how each function is used, the difference between them, and the expected result of using the minimum value returned by getMinCoinTxOut.

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