feat(setup-database): Add SSL authentication method for database setup

[nilanjan-debnath]

Add SSL checkbox and CA Certificate textarea for SetupDatabase.vue page Add UPTIME_KUMA_DB_SSL and UPTIME_KUMA_DB_CA env variables to dbConfig as ssl and ca inside setup-database.js

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📝 Summary of changes done and why they are done

Some database provider needs SSL authentication with CA Certification or without the Certification, but they need the ssl mode.
This pr gives the user the option of adding those credentials from the direct database setup page form field as well as directly through environment variables.

📋 Related issues

• Relates to Database ssl support #6371
• Resolves MariaDB allow secure connection #5900
• Resolves Cannot connect to azure mysql flexible server while --require_secure_transport=ON #5344

📄 Checklist

Please follow this checklist to avoid unnecessary back and forth (click to expand)

• ⚠️ If there are Breaking change (a fix or feature that alters existing functionality in a way that could cause issues) I have called them out
• 🧠 I have disclosed any use of LLMs/AI in this contribution and reviewed all generated content.
  I understand that I am responsible for and able to explain every line of code I submit.
• 🔍 My code adheres to the style guidelines of this project.
• ⚠️ My changes generate no new warnings.
• 🛠️ I have reviewed and tested my code.
• 📝 I have commented my code, especially in hard-to-understand areas (e.g., using JSDoc for methods).
• 🤖 I added or updated automated tests where appropriate.
• 📄 Documentation updates are included (if applicable).
• 🔒 I have considered potential security impacts and mitigated risks.
• 🧰 Dependency updates are listed and explained.

📷 Screenshots or Visual Changes

The SSL toggle button and CA textarea were added at the bottom

Event	Before	After
UI
Testing

[CommanderStorm]

Nice!

I think, we can make this fit in a bit better into our existing desighn with little extra effort.
What do you think?

Also, could you write a short guide (a docker run command + how to generate the certs) for how to get this running? I don't use mariadb, so don't have the best context to write this

[Copilot]

Pull request overview

This PR adds SSL/TLS authentication support for external database connections (MariaDB/MySQL), allowing users to configure SSL mode and provide CA certificates either through the web UI during setup or via environment variables.

Changes:

• Added UI components (toggle and textarea) in the database setup page for SSL configuration
• Extended backend environment variable handling to support UPTIME_KUMA_DB_SSL and UPTIME_KUMA_DB_CA
• Implemented SSL configuration in database connection logic across multiple connection points

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

File	Description
src/pages/SetupDatabase.vue	Added SSL toggle switch and collapsible CA certificate textarea input to the database setup form
server/setup-database.js	Added environment variable parsing for SSL config and SSL connection options in the test connection logic
server/database.js	Implemented SSL configuration with CA certificate support across MariaDB connection configurations

[Copilot]

The new SSL configuration functionality in the environment variable handling lacks test coverage. Consider adding tests to verify that UPTIME_KUMA_DB_SSL and UPTIME_KUMA_DB_CA are correctly parsed and handled, including edge cases like undefined or invalid values.

[nilanjan-debnath]

Improved the UI with detailed description of the new fields.

[CommanderStorm]

I have a few minor tweakas and simplifications.

Could you also post a very short guide how to use this for the wiki?
LGTM once these two are done?
A docker run command + how to generate the certs is sufficient. I don't use mariadb, so don't have the best context to write this.

[nilanjan-debnath]

@CommanderStorm, I'm planning to add those environment variables to the wiki page after this pr gets merged.
For the CA Certificate, users don't have to generate anything they will just provide the credentials received from the database provider.

[CommanderStorm]

Okay, we can merge once there is a documentation PR or a pr comment here how to set this up.
As said: I don't want to document this myself as I am not the expert on this.

[nilanjan-debnath]

Okay, no problem 👍

[nilanjan-debnath]

Documentation PR is submitted Wiki PR #136

Updated section in MariaDB Environment Variables

Environment Variable	Description
UPTIME_KUMA_DB_SSL	(2.0.0) Optional. Enable SSL for database connection (true/false, default: false)
UPTIME_KUMA_DB_CA	(2.0.0) Optional. CA certificate content in PEM format for SSL connection