feat(database): Add MySQL database source with scheduled query execution

This commit adds a new `database` source. A new database source to query data from MySQL databases at scheduled intervals using cron expressions.

Author: powerumc

Cargo.lock

@@ -275,6 +275,9 @@ serde_json.workspace = true
 serde_with = { version = "3.12.0", default-features = false, features = ["macros", "std"] }
 serde_yaml = { version = "0.9.34", default-features = false }
 
+# Databases
+mysql = { version = "26.0.0", features = ["chrono", "native-tls", "buffer-pool"], optional = true }
+
 # Messagepack
 rmp-serde = { version = "1.3.0", default-features = false, optional = true }
 rmpv = { version = "1.3.0", default-features = false, features = ["with-serde"], optional = true }
@@ -321,6 +324,7 @@ bytesize = { version = "2.0.1", default-features = false }
 chrono.workspace = true
 chrono-tz.workspace = true
 colored = { version = "3.0.0", default-features = false }
+cron = { version = "0.15.0", features = ["serde"], default-features = false, optional = true }
 csv = { version = "1.3", default-features = false }
 databend-client = { version = "0.22.2", default-features = false, features = ["rustls"], optional = true }
 derivative = { version = "2.2.0", default-features = false }
@@ -565,6 +569,7 @@ sources-logs = [
   "sources-aws_kinesis_firehose",
   "sources-aws_s3",
   "sources-aws_sqs",
+  "sources-database",
   "sources-datadog_agent",
   "sources-demo_logs",
   "sources-docker_logs",
@@ -613,6 +618,7 @@ sources-aws_ecs_metrics = ["sources-utils-http-client"]
 sources-aws_kinesis_firehose = ["dep:base64"]
 sources-aws_s3 = ["aws-core", "dep:aws-sdk-sqs", "dep:aws-sdk-s3", "dep:async-compression", "sources-aws_sqs", "tokio-util/io"]
 sources-aws_sqs = ["aws-core", "dep:aws-sdk-sqs"]
+sources-database = ["dep:mysql", "dep:cron"]
 sources-datadog_agent = ["sources-utils-http-error", "protobuf-build", "dep:prost"]
 sources-demo_logs = ["dep:fakedata"]
 sources-dnstap = ["sources-utils-net-tcp", "dep:base64", "dep:hickory-proto", "dep:dnsmsg-parser", "dep:dnstap-parser", "protobuf-build", "dep:prost"]
@@ -914,6 +920,7 @@ axiom-integration-tests = ["sinks-axiom"]
 azure-blob-integration-tests = ["sinks-azure_blob"]
 chronicle-integration-tests = ["sinks-gcp"]
 clickhouse-integration-tests = ["sinks-clickhouse"]
+database-integration-tests = ["sources-database"]
 databend-integration-tests = ["sinks-databend"]
 datadog-agent-integration-tests = ["sources-datadog_agent"]
 datadog-logs-integration-tests = ["sinks-datadog_logs"]