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/common/error/src/status_code.rs

@@ -31,6 +31,8 @@ pub enum StatusCode {
     // ====== Begin of catalog related status code =====
     /// Table already exists.
     TableAlreadyExists,
+    TableNotFound,
+    TableColumnNotFound,
     // ====== End of catalog related status code =======
 }