Deploy `pallet-parameters` to rococo and fix dynamic_params name expand (#4006)

Changes:
- Add pallet-parameters to Rococo to configure the NIS and preimage
pallet.
- Fix names of expanded dynamic params. Apparently, `to_class_case`
removes suffix `s`, and `Nis` becomes `Ni` 😑

. Now using
`to_pascal_case`.

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Signed-off-by: Oliver Tale-Yazdi <[email protected]>
Co-authored-by: Alessandro Siniscalchi <[email protected]>
Co-authored-by: Kian Paimani <[email protected]>
Co-authored-by: command-bot <>