Add Connection Description field to Airflow settings File

[sunkickr]

• I have checked that a similar feature request does not already exist.

✍️ Is your feature request related to a problem? Please describe.

No description field

🧩 Describe the solution you'd like

add description field

🤔 Describe alternatives you've considered

Is your feature request specific to a particular Astronomer Platform?

• Astro
• Software
• None/Unknown

💡 Additional context

[erdos2n]

@shri-astro can I take this one?