Add support to propagate args to the connection and other code clean ups

[ahmedriza]

Add support for propagating Session arguments to the chdb connection. This is essential when TLS configuration is required (for example when using the remoteSecure table function).

Clean up code in SessionBuilder::build, Connection::open, remove unmaintainted dev dependency tempdir (replaced with tempfile) and add more tests.

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[ahmedriza]

Reverted the tempdir removal. It looks like tempfile is causing SIGSEGV when loading libchdb.so in integration tests on Linux. Doesn't happen on Mac OS. I am not entirely sure why.

Also, note that the same thing happens on the current main branch too, if we try to use tempfile instead of tempdir. So it has nothing to do with any changes on this branch. In fact, the SIGSEGV happens before any Rust code is executed at all.

[wudidapaopao]

Thanks for contributing!