adding CI test script

.gitlab-ci.yml

+before_script:
+    - export CWD=$(pwd)
+    - source /etc/environment # Why this doesn't happen automatically I don't know...
+    - cd /finesse
+    - git reset --hard
+    - git checkout develop
+    - git pull
+    - rm kat
+    - echo "Building Finesse..."
+    - ./finesse.sh --build > /dev/null 2>&1
+    - echo "Sucessfuly built Finesse"
+    - cd $CWD
+    
+python_3:
+    script:
+        - kat -v
+        - which python3
+        - python3 --version
+        - python3 test/run_tests.py
+        
+python_2:
+    script:
+        - kat -v
+        - which python2.7
+        - python2.7 --version
+        - python2.7 test/run_tests.py
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