Obtain a new AdvancedDLSupport license grant

[Perksey]

Previously, Ultz had a license grant allowing static linking of ADL (the library we use for native interop) for iOS. This has since been invalidated and needs to be renewed for the rebrand of ElgarTK to Silk.NET.

Details for the licensor

Library: Silk.NET
Licensor: Firwood Software
Licensee: Ultz Limited
Signatory: Jarl Gullberg

Status

• We're waiting for the licensor (@Nihlus from @firwood-software) to grant a license.
• We're waiting for the PDF version of the grant to be added to the Silk.NET-Docs repo
• We're waiting for the plaintext version of the grant to be added to THIRD_PARTIED.md.
• We're all set for mobile support.