SimpleX names v2: core, CLI and end-to-end tests

Non-custodial in-app SimpleX name registration. Wallet and ERC-5564
stealth crypto, the names-service interface with an in-memory mock that
verifies real EIP-712 signatures, SQLite/Postgres migrations, the
signed-intent commands, and CLI + end-to-end test coverage (WalletTests,
ChatTests.Names). Bumps the simplexmq pin to c85a895a. GUI code follows
in a stacked PR.

cabal.project

@@ -21,7 +21,7 @@ constraints: zip +disable-bzip2 +disable-zstd
 source-repository-package
     type: git
     location: https://github.com/simplex-chat/simplexmq.git
-    tag: ee4dd0d8ded0f66f70a8890ce09d69e3610aa276
+    tag: c85a895a2f1e01965c89471f8209603b67aeee73
 
 source-repository-package
     type: git