[clang][DependencyScanning] Add a Clang Driver Option to Enable Dependency Scanning Logging (#211966) This PR adds a clang driver option to enable dependency scanning logging. The important implementation detail is that the `DependencyScanningService` holds a single instance of the logger, and we need to route the option to the logger per scan. An `enable` method is added to the logger's API to enable it with thread safety. A second detail worth calling out is that the option is a driver option, so if a `cc1` command is passed directly to the scanner, the option will not be processed.
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