more ci update (#2642)

* Circi use small docker
* caching espressif docker image
* only run make job on pull request or push to master
* hw test run on pull request only, rename build_cmake to build.yml
* enable all ci build, cmake(clang) and make(*) only run with pull_request or push to master

.circleci/config.yml

@@ -13,6 +13,8 @@ jobs:
       # See: https://circleci.com/developer/images/image/cimg/base
       - image: cimg/base:current
 
+    resource_class: small
+
     # Add steps to the job
     # See: https://circleci.com/docs/jobs-steps/#steps-overview & https://circleci.com/docs/configuration-reference/#steps
     steps: