Fixes #22062.

The fix is to distinguish between lookup results being null for a
given fingerprint (because we didn't have enough time to look up an
address) and the empty set (because we received 0 verified or 0
unverified host names in response).

Fixes #31941.

The timeout was again being reached in the GitLab CI environment.

Implements part of #31649.

The timeout was being reached in the GitLab CI environment, which is not
super powerful.

Configuration is held in the .gitlab-ci.yml file.

Fixes: #31400

Includes a metrics-lib upgrade to 2.6.2 and an upgrade to the latest
metrics-base commit 256e619.

Implements part of #31326.

Spotted while working on #31326, but unrelated.

Implements #28584.

Partially takes back b45c630b.

Also fix unit tests.

Still part of #28254.

Fixes #28254.

migrated all files and references from org/torproject/onionoo to org/torproject/metrics/onionoo; added package-info.java for all new packages

Avoids parse issues with previously deprecated and later removed
fields like "as_number" in details documents.

Still related to #23713.

This commit actually only disables the "fingerprint" parameter. Even
though we gave people a 1 month warning, it might happen that somebody
comes along next week and tells us their truly important use case why
they still need this parameter. Once we're really sure this won't
happen, we can rip out some more code that was necessary to implement
this parameter.

Implements #26919.

Implements #25175.

Implements #25177.

Changes the current behavior of the "version" parameter by moving away
from string prefix matching to actually parsing provided (partial)
versions. As a result, for example, "version=0.3.2.1" doesn't
magically include versions 0.3.2.10 to 0.3.2.19, 0.3.2.100 to
0.3.2.199, etc. anymore. Without this change, version ranges would
have become just too confusing. The downside is that this change
requires a major version bump.

Implements #6947.

If the first thing we'd learn from a bridge was an extra-info
descriptor, we would not have stored the contained transports. This
case is very unlikely and has very little effect. Worth fixing anyway.
Found via code analysis.