feat(kafka-observ-lib): Expand kafka-observ-lib alerts/panels descriptions and add new alerts (#1514)

* Fix typo in totalTime

* Fix typo in preferredReplicaImbalance

* Increase size of status rows

* Update signals/panels descriptions

* Fix typo in KafkaOfflinePartitionCount alert

* Add new alerts

KafkaUnderMinISRPartitionCount (critical)
KafkaPreferredReplicaImbalance (warning)

* Expanded alerts descriptions with runbooks

* Generate

* Ignore jvm alerts check for kafka

* Update duration for KafkaUnderMinISRPartitionCount

* Update diff

---------

Co-authored-by: Emily <1282515+Dasomeone@users.noreply.github.com>

Author: v-zhuravlev

kafka-observ-lib/.pint.hcl

@@ -0,0 +1,4 @@
+//ignore fragile promql selectors for JVM memory alerts
+checks {
+  disabled = ["promql/fragile"]
+}

kafka-observ-lib/alerts.libsonnet

@@ -25,8 +25,8 @@ local commonlib = import 'common-lib/common/main.libsonnet';
     uncleanLeaderElectionStat:
       signals.clusterReplicaManager.uncleanLeaderElection.asStat()
       + commonlib.panels.generic.stat.base.stylize(),
-    preferredReplicaInbalanceStat:
-      signals.clusterReplicaManager.preferredReplicaInbalance.asStat()
+    preferredReplicaImbalanceStat:
+      signals.clusterReplicaManager.preferredReplicaImbalance.asStat()
       + commonlib.panels.generic.stat.base.stylize(),
 
     onlinePartitionsStat: