Add .gitlab-ci.yml

.gitlab-ci.yml

+stages:
+  - build
+  - deploy
+  - cleanup
+
+build:
+  stage: build
+  script: make
+  artifacts:
+  name: "$CI_JOB_NAME-$CI_COMMIT_REF_NAME"
+  when: always
+  expire_in: 30 days
+    paths:
+    - build/
+    
+pdf:
+  stage: deploy
+  script: make pdf
+  artifacts:
+  name: "$CI_JOB_NAME-$CI_COMMIT_REF_NAME"
+    paths:
+    - Thesis.pdf
+    - Thesis.tar.gz
+  
+cleanup:
+  stage: cleanup
+  script: make clean
+  when: always
\ No newline at end of file