Test/sangshuduo/td 13408 move example back for 3.0 (#10296)

* [TD-13408]<test>: move examples back to TDegnine

for 3.0

* update tests for 3.0

* [TD-13408]<test>: move rust example back

for 3.0

.gitmodules

@@ -14,3 +14,6 @@
 	path = tests
 	url = https://github.com/taosdata/tests
 	branch = 3.0
+[submodule "examples/rust"]
+	path = examples/rust
+	url = https://github.com/songtianyi/tdengine-rust-bindings.git

rust @ 1c8924dc

+Subproject commit 1c8924dc668e6aa848214c2fc54e3ace3f5bf8df