feat: customize channel information for sqlness tests (#4729)

* feat: add pg and mysql server_address options

* feat: start pg and mysql server(standalone)

* feat: start pg and mysql in distribute

* feat: finally get there, specify postgres sqlness

* feat: support mysql sqlness

* fix: license

* fix: remove unused import

* fix: toml

* fix: clippy

* refactor: BeginProtocolInterceptorFactory to ProtocolInterceptorFactory

* fix: sqlness pg connect

* fix: clippy

* Apply suggestions from code review

Co-authored-by: Yingwen <realevenyag@gmail.com>

* fix: rustfmt

* fix: reconnect pg and mysql when restart

* test: add mysql related sqlness

* fix: wait for start while restarting

* fix: clippy

* fix: cargo lock conflict

fix: Cargo.lock conflict

* fix: usage of '@@tx_isolation' in sqlness

* fix: typos

* feat: retry with backoff when create client

* fix: use millisecond rather than microseconds in backoff

---------

Co-authored-by: Yingwen <realevenyag@gmail.com>

src/script/src/python/rspython/builtins/test.rs

@@ -145,7 +145,7 @@ enum PyValue {
 }
 
 impl PyValue {
-    /// compare if results is just as expect, not using PartialEq because it is not transtive .e.g. [1,2,3] == len(3) == [4,5,6]
+    /// compare if results is just as expect, not using PartialEq because it is not transitive .e.g. [1,2,3] == len(3) == [4,5,6]
     fn just_as_expect(&self, other: &Self) -> bool {
         match (self, other) {
             (PyValue::FloatVec(a), PyValue::FloatVec(b)) => a