feat: New UI Layout Management

[Valkyrie00]

This pull request includes significant refactoring to the AppService class in the internal/services package, focusing on removing the LayoutService and integrating its functionality directly into the AppService. The changes improve the structure and readability of the code by consolidating layout management.

Key changes include:

Integration of Layout Management:

• Removed LayoutService and integrated its functionalities directly into AppService. (internal/services/app.go, internal/services/io.go) [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11]

Simplification of Notification and Modal Handling:

• Replaced LayoutService notification methods with direct calls to layout.GetNotifier(). (internal/services/app.go, internal/services/io.go) [1] [2]
• Introduced showModal method in AppService for handling modal dialogs. (internal/services/io.go)

Enhancement of Search and Table Handling:

• Replaced LayoutService search field and result table methods with direct calls to layout.GetSearch() and layout.GetTable(). (internal/services/app.go, internal/services/io.go) [1] [2] [3] [4] [5]

Removal of LayoutService:

• Deleted layout.go file and all associated methods and interfaces for LayoutService. (internal/services/layout.go)

These changes streamline the code and reduce redundancy by consolidating layout-related functionalities into the AppService class, enhancing maintainability and readability.