Test/sangshuduo/td 13408 move example back (#10291)

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

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

* add examples/c to CMakeLists.txt

* update tests

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

.gitmodules

@@ -20,3 +20,6 @@
 	path = tests
 	url = https://github.com/taosdata/tests
 	branch = develop
+[submodule "examples/rust"]
+	path = examples/rust
+	url = https://github.com/songtianyi/tdengine-rust-bindings.git

rust @ 1c8924dc

+Subproject commit 1c8924dc668e6aa848214c2fc54e3ace3f5bf8df