added .githooks dir, prevent local commits in main

.githooks/README.md

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+# `.githooks` directory
+
+Because the `.git\hooks` is invisible and therefor harder to add to the repo the following construct is made. All hooks are part of the repo and are located in the `.githooks` directory, which can be committed.
+
+To notify git to look in the `.githooks` directory, execute the following:
+
+```
+git config core.hooksPath .githooks
+```
+
+If you want this behavior for all repos:
+```
+git config --global core.hooksPath .githooks
+```

.githooks/pre-commit

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+#!/bin/bash
+branch=$(git rev-parse --abbrev-ref HEAD)
+if [ "$branch" = "main" ]; then
+    echo "No commits on man branch allowed"
+    exit 1
+fi