Move query templates to a hierarchical menu at query editor

[antonkovalenko]

1. Remove create table and other query templates from ... control in schema tree
2. Add SQL Templates button to the editor as displayed below

3. Add following levels and queries to it

• Tables
  • Create row table - use existing templates where it's possible
  • Upsert into table
  • Update table
  • Select from a table
  • Delete rows
  • Drop table
  • Alter table (template is required)
  • Create column table
• Topics
  • Create Topic
• Change data capture
  • Create CDC Stream
• Async replication
  • Create async replication
• Resource pools
  • Create resource pool
• Users
  • Create user
  • Create group
  • Drop user
  • Drop group
  • Grant privilege
  • Revoke privilege
• Diagnostics
  • add templates