Adapt to Modifications in ISDS Interface
Changes to ISDS interface [are scheduled][].
Modifications to libisds have already been uploaded to upstream and libisds-0.10.7 has already been released.
Make modifications to Datovka sources to accommodate the changes:
* [x] Update library building scripts.
* [x] Add conversion code to newly added types.
[are scheduled]: https://www.datoveschranky.info/-/zmeny-v-aplikacnim-rozhrani-isds
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