update CI steps with names

Author: Qinghao Shi

.circleci/config.yml

@@ -12,12 +12,16 @@ jobs:
           path: sinppet/TESTS
 
       ### Repo structure Tests ###
-      - run: |
+      - run:
+          name: Repo structure Tests
+          command: |
           cd sinppet/TESTS
           python3 .circleci/repo_checks.py
 
       ### Astyle Tests ###
-      - run: |
+      - run:
+          name: Astyle Tests
+          command: |
           cd sinppet/TESTS
           wget https://github.com/ARMmbed/mbed-os/raw/master/.astylerc
           git --no-pager diff --name-only --diff-filter=dr $(git merge-base --fork-point origin/master) HEAD | ( grep '.\(c\|cpp\|h\|hpp\)$' || true ) | while read file; do astyle -n --options=.astylerc "${file}"; done
@@ -26,7 +30,9 @@ jobs:
       ### Compile Tests ###
       - run: mv sinppet/TESTS/mbed-os.lib .
       - run: git clone https://github.com/ARMmbed/mbed-os.git mbed-os
-      - run: |
+      - run:
+          name: Compile Tests
+          command: |
           mbed config root .
           mbed update
           mbed add https://github.com/c1728p9/AudioPlayer