Alter the Guild service to allow distinguishing communities from guilds

[mkimberlin]

As an administrator, I want to add a flag to guild services that indicates whether a guild is a community so that we can categorize and manage guilds based on their purpose.

Acceptance Criteria:

• The guild table is extended to include a new boolean field named community.
• Necessary data objects representing guilds (entities, dtos, etc) should be altered to contain an boolean field to store this value.
• The guild creation API endpoint allows specifying a value for the community flag during guild creation.
• Existing guild management APIs are updated to allow modifying the community flag for existing guilds.
• The guild retrieval APIs (e.g., by ID or search) include the community flag in the returned guild information.

[mjperry91]

#2312