✨ Adds MariaDB image with direct LDAP PAM authentication

- Introduced a new Containerfile to build a MariaDB image with direct LDAP PAM support.
- Implemented a custom PAM module (`pam_ldap_direct.so`) built from the PADL source to avoid dependencies on `libpam-ldap` and `nslcd`.
- Updated the entrypoint script to dynamically generate the PAM configuration file (`/etc/pam_ldap.conf`) based on environment variables.
- Added a README.md to document the image usage, configuration, and build process.
- Created a test suite to validate the image build and entrypoint behavior, ensuring proper handling of environment variables and configuration generation.
- Configured health checks and ensured the stock MariaDB entrypoint and lifecycle are preserved.

acme/truenas-certificate-deployer/README.md

@@ -17,7 +17,7 @@ certificate's PEM or private key in place, so each renewal receives a new ID.
 2. If no matching record exists, import one with a temporary name ending in
    `_pending_<16-character full-chain hash>`.
 3. Select its ID for the UI and request a UI restart when needed. Connect directly
-   to HTTPS and require an exact match against the expected leaf certificate.
+   to HTTPS and require an exact match against the expected leaf certifi4scate.
 4. Confirm the selected UI certificate ID, then delete superseded managed records
    using non-forced deletion jobs. TrueNAS checks service dependencies and refuses
    deletion of certificates still referenced by services.