I have ClickHouse server running in virtual environment that reports the following warning:

```
# clickhouse-client
ClickHouse client version 22.7.2.15 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 22.7.2 revision 54457.

Warnings:
 * Linux is not using a fast TSC clock source. Performance can be degraded. Check /sys/devices/system/clocksource/clocksource0/current_clocksource

# cat /sys/devices/system/clocksource/clocksource0/current_clocksource
kvm-clock
```

It looks like a false positive as kvm-clock is considered a preferable clock source for kvm-based VMs.
https://opensource.com/article/17/6/timekeeping-linux-vms

Regardless of whether it's a bug or not, I'd like to have some mechanism that allows to disable particular warnings. There are may be other questionable warnings in the future.

{
    if (!shared->external_dictionaries_loader)
        shared->external_dictionaries_loader =
            std::make_unique<ExternalDictionariesLoader>(getGlobalContext());
    return *shared->external_dictionaries_loader;
}
const ExternalUserDefinedExecutableFunctionsLoader & Context::getExternalUserDefinedExecutableFunctionsLoader() const
{
    return const_cast<Context *>(this)->getExternalUserDefinedExecutableFunctionsLoader();
}
ExternalUserDefinedExecutableFunctionsLoader & Context::getExternalUserDefinedExecutableFunctionsLoader()
{
    std::lock_guard lock(shared->external_user_defined_executable_functions_mutex);
    return getExternalUserDefinedExecutableFunctionsLoaderUnlocked();
}
ExternalUserDefinedExecutableFunctionsLoader & Context::getExternalUserDefinedExecutableFunctionsLoaderUnlocked()
{
    if (!shared->external_user_defined_executable_functions_loader)
        shared->external_user_defined_executable_functions_loader =
            std::make_unique<ExternalUserDefinedExecutableFunctionsLoader>(getGlobalContext());
    return *shared->external_user_defined_executable_functions_loader;
}
const ExternalModelsLoader & Context::getExternalModelsLoader() const
{
    return const_cast<Context *>(this)->getExternalModelsLoader();
}
ExternalModelsLoader & Context::getExternalModelsLoader()