Custom Built-in Unit Test Suite (#105)

* tests: new built-in test runner

* tests: update tests for new builtin test api

* tests: print test suite logs

* tests: remove cmocka from build files

* tests: colorize test suite log and remove redundant prints

.github/workflows/ccpp.yml

@@ -1,24 +0,0 @@
-name: C/C++ CI
-
-on: [push]
-
-jobs:
-  build:
-
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macOS-latest]
-    
-    steps:
-    - uses: actions/checkout@v1
-    - name: dependencies
-      run: sh ./build-deps.sh
-    - name: autogen
-      run: sh autogen.sh
-    - name: configure
-      run: ./configure
-    - name: make
-      run: make
-    - name: make check
-      run: make check