fix: add cmake file

examples/c/CMakeLists.txt

+PROJECT(TDengine)
+
+IF (TD_LINUX)
+  INCLUDE_DIRECTORIES(. ${TD_SOURCE_DIR}/src/inc ${TD_SOURCE_DIR}/src/client/inc  ${TD_SOURCE_DIR}/inc)
+  AUX_SOURCE_DIRECTORY(. SRC)
+
+  add_executable(tmq "")
+  add_executable(stream_demo "")
+  add_executable(schemaless "")
+  add_executable(prepare "")
+  add_executable(demo "")
+  add_executable(asyncdemo "")
+
+  target_sources(tmq
+      PRIVATE
+      "tmq.c"
+      )
+
+  target_sources(stream_demo
+      PRIVATE
+      "stream_demo.c"
+      )
+
+  target_sources(schemaless
+      PRIVATE
+      "schemaless.c"
+      )
+
+  target_sources(prepare
+    PRIVATE 
+    "prepare.c"
+    )
+    
+  target_sources(demo
+    PRIVATE 
+    "demo.c"
+    )
+
+  target_sources(asyncdemo
+    PRIVATE 
+    "asyncdemo.c"
+    )
+
+  target_link_libraries(tmq
+      taos_static
+      )
+
+  target_link_libraries(stream_demo
+      taos_static
+      )
+
+  target_link_libraries(schemaless
+      taos_static
+      )
+
+  target_link_libraries(prepare
+      taos_static
+      )
+  
+  target_link_libraries(demo
+      taos_static
+      )
+
+  target_link_libraries(asyncdemo
+      taos_static
+      )
+
+  target_include_directories(tmq
+      PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
+      )
+
+  target_include_directories(stream_demo
+      PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
+      )
+
+  target_include_directories(schemaless
+      PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
+      )
+
+  target_include_directories(api_reqid
+      PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/inc"
+      )
+
+
+  SET_TARGET_PROPERTIES(tmq PROPERTIES OUTPUT_NAME tmq)
+  SET_TARGET_PROPERTIES(stream_demo PROPERTIES OUTPUT_NAME stream_demo)
+  SET_TARGET_PROPERTIES(schemaless PROPERTIES OUTPUT_NAME schemaless)
+  SET_TARGET_PROPERTIES(prepare PROPERTIES OUTPUT_NAME prepare)
+  SET_TARGET_PROPERTIES(demo PROPERTIES OUTPUT_NAME demo)
+  SET_TARGET_PROPERTIES(asyncdemo PROPERTIES OUTPUT_NAME asyncdemo)
+ENDIF ()
+IF (TD_DARWIN)
+  INCLUDE_DIRECTORIES(. ${TD_SOURCE_DIR}/src/inc ${TD_SOURCE_DIR}/src/client/inc  ${TD_SOURCE_DIR}/inc)
+  AUX_SOURCE_DIRECTORY(. SRC)
+ENDIF ()