feat: Go SDK update for version v6.0.0

[ChiragAgg5k]

This PR contains updates to the SDK for version v6.0.0.

What's Changed

• Breaking: Removed Health and Usage services and their models
• Breaking: Removed ListMessageLogs, ListProviderLogs, ListSubscriberLogs, ListTopicLogs from Messaging
• Breaking: Changed spatial default setter types to [][]interface{} and []float64 in Databases/TablesDB
• Breaking: Removed OS, client, and device fields plus countryCode/countryName from ActivityEvent (country remains)
• Added: Organization Get, Update, Delete, and membership management methods
• Added: WithBearer client option for OAuth bearer-token authentication
• Added: VectorDot, VectorCosine, VectorEuclidean query helpers
• Added: NewSpecification option to Backups.CreateRestoration, Specification option to TablesDB.Create
• Added: Type filter option to Functions.ListSpecifications and Sites.ListSpecifications
• Added: UpdateOAuth2Appwrite and UpdateDenyCorporateEmailPolicy methods to Project
• Added: Token option to Functions.GetDeploymentDownload, new OAuth2 OIDC/server options
• Added: billing plan, Organization, OAuth2Appwrite, Program response models
• Added: email canonicalization and classification fields to User model
• Added: Type field to BackupPolicy model
• Updated: deprecated Databases transaction methods in favor of TablesDB equivalents

[greptile-apps]

Too many files changed for review. (685 files found, 200 file limit)