CI: add lint job to GHA
CI: add lint job to GHA

This is golangci-lint run with default linters and configuration.

Install golang since this is no longer done by golangci-lint v3.x.

We use 1.x for golang version to ease the maintenance burden, since
this should always point to latest stable golang release (at the time of
writing this, using 1.x results in go1.17.7 being installed).

Signed-off-by: Kir Kolyshkin <3a017b8ddb3f9cf3e4a59978b004111bdeb97f08@gmail.com>

godbus/dbus