chore: add clickhouse as db for logs on agent and search

backend/internal/storage/migrations.go

@@ -1,3 +1,16 @@
 package storage
 
 const CreateSqlite = ``
+
+const CreateLogsTable = `
+CREATE TABLE IF NOT EXISTS logs (
+    timestamp DateTime64(3) DEFAULT now(),
+    level     LowCardinality(String),
+    service   LowCardinality(String),
+    agent     LowCardinality(String),
+    message   String
+) ENGINE = MergeTree()
+ORDER BY (timestamp, level, service, agent)
+TTL timestamp + INTERVAL 30 DAY
+SETTINGS index_granularity = 8192
+`