feat: add system_stats lib to collect system stats (apache#1442)

## Rationale
Part of apache#1438. The preparations for reporting system statistics.

## Detailed Changes
- Add a new component called `system_stats` to helps collect system
statistics.
- Introduce a dependency [`sysinfo`](https://crates.io/crates/sysinfo).

## Test Plan
Add a new unit test.

Cargo.toml

@@ -53,6 +53,7 @@ members = [
     "components/sampling_cache",
     "components/size_ext",
     "components/skiplist",
+    "components/system_stats",
     "components/table_kv",
     "components/test_util",
     "components/time_ext",
@@ -164,7 +165,7 @@ router = { path = "router" }
 runtime = { path = "components/runtime" }
 sampling_cache = { path = "components/sampling_cache" }
 snafu = { version = "0.6.10", features = ["backtraces"] }
-serde = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0.60"
 server = { path = "server" }
 size_ext = { path = "components/size_ext" }
@@ -173,6 +174,7 @@ slog = "2.7"
 spin = "0.9.6"
 sqlparser = { version = "0.35", features = ["serde"] }
 system_catalog = { path = "system_catalog" }
+system_statis = { path = "component/system_stats" }
 table_engine = { path = "table_engine" }
 table_kv = { path = "components/table_kv" }
 tempfile = "3.1.0"

components/skiplist/Cargo.toml

@@ -36,8 +36,6 @@ rand = { workspace = true }
 [dev-dependencies]
 criterion = { workspace = true }
 yatp = { git = "https://github.com/tikv/yatp.git", rev = "4b71f8abd86890f0d1e95778c2b6bf5a9ee4c502" }
-# [target.'cfg(not(target_env = "msvc"))'.dev-dependencies]
-# tikv-jemallocator = "0.4.0"
 
 [[bench]]
 name = "bench"

components/system_stats/Cargo.toml

@@ -0,0 +1,33 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "system_stats"
+authors = ["HoraeDB Authors"]
+
+[package.license]
+workspace = true
+
+[package.version]
+workspace = true
+
+[package.edition]
+workspace = true
+
+[dependencies]
+sysinfo = { version = "0.30", default-features = false }
+tokio = { workspace = true }