Build ubench in CI (#305)

### Issue
N/A

### Description
tests/microbenchmark wasn't getting built by CI

### List of the changes
modify CI yaml to build it with the unit tests

### Testing
Builds locally, CI test pending

### API Changes
There are no API changes in this PR.

.github/workflows/build-tests.yml

@@ -28,7 +28,7 @@ on:
 
 
 env:
-  BUILD_TARGET: umd_tests
+  BUILD_TARGETS: "umd_tests ubench"
   BUILD_OUTPUT_DIR: ./build
   LIB_OUTPUT_DIR: ./build/lib
   DEPS_OUTPUT_DIR: ./build/_deps
@@ -62,11 +62,11 @@ jobs:
           submodules: recursive
           lfs: 'true'
 
-      - name: Build ${{ env.BUILD_TARGET }}
+      - name: Build ${{ env.BUILD_TARGETS }}
         run: |
           echo "Compiling the code..."
           cmake -B ${{ env.BUILD_OUTPUT_DIR }} -G Ninja -DTT_UMD_BUILD_TESTS=ON
-          cmake --build ${{ env.BUILD_OUTPUT_DIR }} --target ${{ env.BUILD_TARGET }}
+          cmake --build ${{ env.BUILD_OUTPUT_DIR }} --target ${{ env.BUILD_TARGETS }}
           echo "Compile complete."
 
       # This is needed to preserve file permissions

tests/CMakeLists.txt

@@ -58,9 +58,7 @@ else()
     include_directories("${CMAKE_CURRENT_BINARY_DIR}/$ENV{ARCH_NAME}")
 endif()
 
-if(MASTER_PROJECT)
-    add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/microbenchmark)
-endif()
+add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/microbenchmark)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/api)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/pcie)
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/simulation)