fix: add authnkeys projection (#2801)

* begin authn keys

* single table for state change

* add key type

* rename migration

* format imports

* fix test

migrations/cockroach/V1.101__authn_keys.sql

@@ -0,0 +1,16 @@
+CREATE TABLE zitadel.projections.authn_keys(
+    id STRING
+    , creation_date TIMESTAMPTZ NOT NULL
+    , resource_owner STRING NOT NULL
+    , aggregate_id STRING NOT NULL
+    , sequence INT8 NOT NULL
+
+    , object_id STRING NOT NULL
+    , expiration TIMESTAMPTZ NOT NULL
+    , identifier STRING NOT NULL
+    , public_key BYTES NOT NULL
+    , enabled BOOLEAN NOT NULL DEFAULT true
+    , type INT2 NOT NULL DEFAULT 0
+
+    , PRIMARY KEY (id)
+);