Elasticsearch: Implement processing of logs query results in backend (#63647)

* Elasticsearch: Add processing of logs query to backend

* Add and fix tests

* Add snapshot tests

* Fix test in ES client

* Small updates, remove redundant logic

* Refactor setPreferredVisType to improve readability

pkg/tsdb/elasticsearch/testdata_response/logs.queries.json

@@ -0,0 +1,23 @@
+[
+  {
+    "alias": "",
+    "datasource": {
+      "type": "elasticsearch",
+      "uid": "haha"
+    },
+    "datasourceId": 42,
+    "expression": "",
+    "hide": true,
+    "intervalMs": 200,
+    "maxDataPoints": 1248,
+    "metrics": [
+      {
+        "id": "1",
+        "type": "logs"
+      }
+    ],
+    "query": "",
+    "refId": "a",
+    "window": ""
+  }
+]