TableEngine and SqlHandler impl (#45)

* Impl TableEngine, bridge to storage

* Impl sql handler to process insert sql

* fix: minor changes and typo

* test: add datanode test

* test: add table-engine test

* fix: code style

* refactor: split out insert mod from sql and minor changes by CR

* refactor: replace with_context with context

src/datatypes/src/data_type.rs

@@ -42,6 +42,14 @@ impl ConcreteDataType {
         )
     }
 
+    pub fn is_boolean(&self) -> bool {
+        matches!(self, ConcreteDataType::Boolean(_))
+    }
+
+    pub fn is_string(&self) -> bool {
+        matches!(self, ConcreteDataType::String(_))
+    }
+
     pub fn is_signed(&self) -> bool {
         matches!(
             self,

src/datatypes/src/prelude.rs

@@ -3,4 +3,6 @@ pub use crate::macros::*;
 pub use crate::scalars::{Scalar, ScalarRef, ScalarVector, ScalarVectorBuilder};
 pub use crate::type_id::LogicalTypeId;
 pub use crate::value::Value;
-pub use crate::vectors::{Helper as VectorHelper, MutableVector, Validity, Vector, VectorRef};
+pub use crate::vectors::{
+    Helper as VectorHelper, MutableVector, Validity, Vector, VectorBuilder, VectorRef,
+};