[StepSecurity] Apply security best practices (#68)

Signed-off-by: StepSecurity Bot <bot@stepsecurity.io>

Author: step-security-bot

.pre-commit-config.yaml

@@ -0,0 +1,14 @@
+repos:
+- repo: https://github.com/gherynos/pre-commit-java
+  rev: v0.2.4
+  hooks:
+  - id: Checkstyle
+- repo: https://github.com/gitleaks/gitleaks
+  rev: v8.16.3
+  hooks:
+  - id: gitleaks
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v4.4.0
+  hooks:
+  - id: end-of-file-fixer
+  - id: trailing-whitespace