Metric for constraint violations error

[ties]

Metric for resource constraint violation (possibly per type?):

e.g. - from run with fake constraints file:

rpki-client: rpki.ripe.net/repository/DEFAULT/11/117b96-fe6d-4ac3-b499-23399b128639/1/cc_r40oUhgL_7XkYPn0Hil9x9VQ.roa: trust anchor constraints violation: 194.150.233.0/24
rpki-client: rpki.ripe.net/repository/DEFAULT/2e/ea29f2-c340-4d61-b5bb-b853dff8765c/1/AZq3Kiq8vV5rftBhwG7XxN06HdA.roa: trust anchor constraints violation: 185.141.200.0/22
rpki-client: rpki.ripe.net/repository/DEFAULT/2e/ea29f2-c340-4d61-b5bb-b853dff8765c/1/Xuii6IX1hB0EakRrKZ24JjO4hZY.roa: trust anchor constraints violation: 2a0b:8f00::/29
rpki-client: rpki.ripe.net/repository/DEFAULT/05/653c24-68e5-4ad8-b763-30c9de205afc/1/rkhsUNkaZdR5ssM7jfnzVuus9N0.roa: trust anchor constraints violation: 62.68.73.0/24
rpki-client: rpki.ripe.net/repository/DEFAULT/05/653c24-68e5-4ad8-b763-30c9de205afc/1/POgJEqh5yw5U-CMfkRVhpojBN_g.roa: trust anchor constraints violation: 62.68.73.0/24
...
rpki-client: rpki.ripe.net/repository/DEFAULT/3a/2d1a35-ff8a-46b4-8c47-63c721cf1f56/1/W28akvFoj_AE9MGse-3jZf04Yd8.roa: trust anchor constraints violation: 2a13:a5c0::/32