feat: Initial support of postgresql wire protocol (#229)

* feat: initial commit of postgres protocol adapter

* initial commit of postgres server

* feat: use common_io runtime and correct testcase

* fix previous tests

* feat: adopt pgwire api changes and add support for text encoded data

* feat: initial integration with datanode

* test: add feature flag to test

* fix: resolve lint warnings

* feat: add postgres feature flags for datanode

* feat: add support for newly introduced timestamp type

* feat: adopt latest datanode changes

* fix: address clippy warning for flattern scenario

* fix: make clippy great again

* fix: address issues found in review

* chore: sort dependencies by name

* feat: adopt new Output api

* fix: return error on unsupported data types

* refactor: extract common code dealing with record batches

* fix: resolve clippy warnings

* test: adds some unit tests postgres handler

* test: correct test for cargo update

* fix: update query module name

* test: add assertion for error content

src/datatypes/src/type_id.rs

@@ -1,3 +1,4 @@
+#[cfg(any(test, feature = "test"))]
 use crate::data_type::ConcreteDataType;
 
 /// Unique identifier for logical data type.

src/datatypes/src/vectors/list.rs

@@ -268,6 +268,7 @@ impl MutableVector for ListVectorBuilder {
 #[cfg(test)]
 mod tests {
     use arrow::array::{MutableListArray, MutablePrimitiveArray, TryExtend};
+    use serde_json::json;
 
     use super::*;
     use crate::types::ListType;
@@ -426,8 +427,8 @@ mod tests {
 
         let list_vector = ListVector::from(arrow_array);
         assert_eq!(
-            "Ok([Array([Number(1), Number(2), Number(3)]), Null, Array([Number(4), Null, Number(6)])])",
-            format!("{:?}", list_vector.serialize_to_json())
+            vec![json!([1, 2, 3]), json!(null), json!([4, null, 6]),],
+            list_vector.serialize_to_json().unwrap()
         );
     }