EAGLE-1333: Remove Eagle.FileType.Daliuge

This filetype was added back when we were considering having a completely new file type to include the GraphConfigs. A "daliuge" file. In the end, we just placed the graph configs inside the LogicalGraph, removing the need for a new file type.

Also, changed the "type" attribute on the Field class from a string to a Daliuge.DataType. This is a little unusual, since the "type" for a field can be anything. "MeasurementSet" or "Object.Observation" etc. It doesn't just have to be a known value within the Enum. But typescript allows you to give arbitrary values to Enums, so it is not an issue in practice. And it does have some advantages in code completion/typing.

Summary by Sourcery

Enhancements:

Change the 'type' attribute on the Field class from a string to a Daliuge.DataType for improved code completion and typing.

Reviewer's Guide by Sourcery

This PR removes the unused Eagle.FileType.Daliuge and updates the Field class's type attribute from string to Daliuge.DataType enum. The changes primarily involve removing code related to the Daliuge file type and adjusting file type handling throughout the codebase.

Updated class diagram for the Eagle class

classDiagram
    class Eagle {
        + logicalGraph() LogicalGraph
        + saveGraphToDisk(graph: LogicalGraph)
        + showEagleIsLoading()
        + showUserMessage(title: string, message: string)
        + determineEagleVersion(dataObject: any) string
    }
    note for Eagle "Removed handling for Eagle.FileType.Daliuge."

File-Level Changes

Change	Details	Files
Removed Eagle.FileType.Daliuge enum value and related code	Removed Daliuge from FileType enum Removed file extension handling for .dlg files Updated file type number mapping sequence Removed Daliuge-specific JSON validation logic Removed Daliuge file type handling from file operations	`src/Eagle.ts` `src/Utils.ts` `src/Repositories.ts` `src/Modals.ts` `src/RepositoryFile.ts`
Changed Field class type attribute from string to Daliuge.DataType	Updated type attribute declaration to use Daliuge.DataType Modified type-related method signatures to use Daliuge.DataType Added type casting for string concatenation with Daliuge.DataType Updated type comparison to use toString() for compatibility	`src/Field.ts` `src/Utils.ts` `src/Eagle.ts`

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ICRAR / EAGLE