test: PointTest.java #HSFDPMUW (#6391)

* test: added Tests for Point.java

* style: fixed formatting and comments

* style: formatted with clang-format and renamed variables

* style: fixed imports to not use the '.*' form

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Co-authored-by: Aaron <aaron@hochschule.de>
Co-authored-by: Deniz Altunkapan <93663085+DenizAltunkapan@users.noreply.github.com>