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.

Context::Context(const Context &) = default;
Context & Context::operator=(const Context &) = default;
SharedContextHolder::SharedContextHolder(SharedContextHolder &&) noexcept = default;
SharedContextHolder & SharedContextHolder::operator=(SharedContextHolder &&) noexcept = default;
SharedContextHolder::SharedContextHolder() = default;
SharedContextHolder::~SharedContextHolder() = default;
SharedContextHolder::SharedContextHolder(std::unique_ptr<ContextSharedPart> shared_context)
    : shared(std::move(shared_context)) {}
void SharedContextHolder::reset() { shared.reset(); }
ContextMutablePtr Context::createGlobal(ContextSharedPart * shared)
{
    auto res = std::shared_ptr<Context>(new Context);
    res->shared = shared;
    return res;
}
void Context::initGlobal()
{
    assert(!global_context_instance);
    global_context_instance = shared_from_this();
    DatabaseCatalog::init(shared_from_this());
}
SharedContextHolder Context::createShared()
{
    return SharedContextHolder(std::make_unique<ContextSharedPart>());
}
ContextMutablePtr Context::createCopy(const ContextPtr & other)