Internal Notes for Table Columns

### 🔖 Enhancement description Over time, it becomes difficult to remember the purpose of certain columns, especially in larger schemas. It would be helpful to have an optional "notes" or "description" field for each column in the Appwrite console. This would allow developers to document the intent, usage, or constraints of a column. ### 🎤 Pitch None ### 👀 Have you spent some time to check if this issue has been raised before? - [x] I checked and didn't find similar issue ### 🏢 Have you read the Code of Conduct? - [x] I have read the [Code of Conduct](https://github.com/appwrite/.github/blob/main/CODE_OF_CONDUCT.md)