[Tile-serving] [openstreetmap/osm2pgsql] add option to suppress progress log (-q --quiet) (#591)

[Hartmut Holzgraefe]

> "It is especially problematic for programs calling osm2pgsql"

Aside from the stdout/stderr issue, wouldn't it make sense to only print progress updates if stdout/stderr is a tty?

It's easily testable via the isatty(fd) C standard library function, and a similar approach is used by basic linux tools like "ls", which only adds colors, and columnar output, if writing to a tty.

The majority of the --noprogress use cases would already be taken care of with this, but explicit --noprogress and --progress options would then still make sense to override the automatic decision and explicitly enforce desired behavior ...

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