Added poetry install to the pre-commit hooks. (#329)

.pre-commit-config.yaml

@@ -1,3 +1,6 @@
+default_language_version:
+  python: python3.11
+
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
   rev: v4.5.0
@@ -82,6 +85,8 @@ repos:
   rev: 1.7.0
   hooks:
   - id: poetry-check
+  - id: poetry-install
+  # `pre-commit install --install-hooks -t post-checkout -t post-merge` to activate
 
 - repo: https://github.com/Lucas-C/pre-commit-hooks-java
   rev: 1.3.10

CONTRIBUTING.md

@@ -9,7 +9,6 @@
 - [Generate an SSH Key](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent) & [Add SSH Key to GitHub](https://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account)
 - [Clone the Project (IDE Specific)](https://docs.github.com/de/repositories/creating-and-managing-repositories/cloning-a-repository)
 - [Install the python Project](https://python-poetry.org/docs/basic-usage/#installing-dependencies)
-- [Install pre-commit](https://pre-commit.com/#install)
 
 ## Repository structure
 
@@ -54,6 +53,7 @@ We decided to use english on everything close to code but will write longer text
 german.
 
 ## Pre-Commit Usage
+- [Install pre-commit](https://pre-commit.com/#install) `pre-commit install --install-hooks -t post-checkout -t post-merge -t pre-commit`
 
 - the following code format rules are so enforced:
     - Whitespace formatting: