Allow DBUP ExecutionTimeout to be set

[jakeduddy]

"Connection Timeout" can be set for connection setting to SQL server but DBUP has a default timeout of 30s, which doesn't seem to be adjustable with PBI-Tools. A parameter to be sent from .pbixproj.json would allow more complex scripts to be executed.

https://github.com/pbi-tools/pbi-tools/blob/main/src/PBI-Tools/Deployments/SqlScriptsDeployer.cs
Function: BuildUpgradeEngine + engineBuilder.WithExecutionTimeout(TimeSpan.FromMinutes(5));

[mthierba]

The Microsoft .Data.SqlClient Command Timeout connection string property (https://github.com/dotnet/SqlClient/blob/2c2f100d8ab9a1f6ee8c048a260d77e6a738e1e7/release-notes/2.1/2.1.0-preview2.md#command-timeout-connection-string-property) does not do the job?
In dbup, the timeout is only overwritten if specified, otherwise the underlying provider's timeout kicks in, I believe:

https://github.com/DbUp/DbUp/blob/cc439e28add976c057d680c903b80e089d288c7a/src/dbup-core/Support/ScriptExecutor.cs#L131

[jakeduddy]

"Command Timeout" does indeed work, was using "Connection Timeout"

[mthierba]

ref: dotnet/SqlClient#722