feat(remove-mls-data-on-device-removed) #WPB-12155

[alexandreferris]

• Change usage of CoreCryptoCentral to CoreCrypto directly
• Continue with usage of MLSClient (for now)
• Add a new method to wipe client's MLS folder
• Add tests

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• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
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What's new in this PR?

Issues

From upper lib usages (Legalhold) there was no way to properly wipe MLS data of removed client.

Causes (Optional)

Not implemented.

Solutions

• Change usage from CoreCryptoCentral to CoreCrypto but keep usage of MlsClient just so we don't have to do the full migration (CoreCryptoCentral -> CoreCrypto) for now.
• Add wipe() method to CryptoMlsClient that closes the client connection and removes the MLS folder and files

Testing

Test Coverage (Optional)

• I have added automated test to this contribution

Notes (Optional)

We first thought on using CoreCrypto original wipe() function, but unfortunately for now there is an issue with the said function so we are doing the wipe ourselves.
When the changes come live from CoreCrypto we can then update and remove our own logic to just call coreCrypto.wipe()