Add entrypoint for binary signing in mobile wallets

[DOBEN]

Purpose

Work has been done for "signing of binary messages" in the Android mobile wallet. To test the implementation, the wallet-test-bench should enable related tests for the mobile wallets. Currently, these tests were disabled because the dapp-libraries in this repo threw the error:

throw new Error(`signing 'BinaryMessage' is not yet supported by the mobile wallets`);

Closes #68 Related to: https://github.com/Concordium/concordium-misc-tools/pull/145

Changes

In preparation for updating the wallet-connect-test-bench for testing the signing of binary messages in the mobile wallets, some changes were required:

• Add entrypoint for binary signing in mobile wallets.
• Add support to pass the WalletConnectNamespaceConfig instead of using the default one. This is particularly useful for the wallet-connect-test-bench since we want to exclude RequestVerifiablePresentation method to be able to test legacy wallets.
• Fix circular dependency between index and WalletConnect.ts files.

[DOBEN]

Addressing and moving over to this PR: https://github.com/Concordium/concordium-dapp-libraries/pull/43