feat(kata-tennis): added tennis refactoring kata

.gitlab-ci.yml

README.md

tennis/README.md

tennis/refactoring/.gitignore

tennis/refactoring/.gitlab-ci.yml

tennis/refactoring/pom.xml

...s/refactoring/src/main/java/fr/ippon/kata/TennisGame.java

.../refactoring/src/main/java/fr/ippon/kata/TennisGame1.java

.../refactoring/src/main/java/fr/ippon/kata/TennisGame2.java

.../refactoring/src/main/java/fr/ippon/kata/TennisGame3.java

...oring/src/test/java/fr/ippon/kata/TennisGameUnitTest.java

tennis/refactoring/src/test/resources/param-test-data.csv