Feat: Added minSize property to string attribute.

[singhbhaskar]

Description

Added minSize for string attribute for Issue:
appwrite/appwrite#5403

Testing

Build appwrite docker image with the change to test

• Ensure that minSize is added for string attribute.
• Attribute with minSize is enforced on document when created.

[fogelito]

Hey, @singhbhaskar thank you for this PR 👍
Database attributes usually do not have an option for limiting length, I say usually because there is an option for it on MariaDB using
CHECK (LENGTH(attr) >= 10);
In this case, using $formatOptions on Appwrite's side can be a nice solution as we do in the Integer attribute, as more community members will vote for this feature.

[singhbhaskar]

Sure @fogelito ,
I will check the implementation for $formatOptions and update here. Thanks for the suggestion

[singhbhaskar]

Hi @fogelito ,
I was able to implement without making changes to Uthopia as per your suggestion of formatOptions. Hence closing this PR. Thanks for the suggestion.