feat: loki integration for jujud logging

Uses loki integration to push the loki endpoint to juju database, so
it can send all the information to all the agents. This will allow
the a much more distributed logging approach.

Author: SimonRichardson

charmcraft.yaml

@@ -30,6 +30,10 @@ requires:
     interface: s3
     limit: 1
     optional: true
+  loki-push-api:
+    interface: loki_push_api
+    limit: 1
+    optional: true
 
 peers:
   dbcluster:
@@ -62,3 +66,5 @@ charm-libs:
     version: "1"
   - lib: data_platform_libs.s3
     version: "0"
+  - lib: loki_k8s.loki_push_api
+    version: "1"