Backend: Graph Editor Network Support

[hannibal002]

What

Adds network detection to the Graph Editor.
Separate networks are visually distinguished by edge color, making it
easier to identify disconnected subgraphs when working on large islands.

Two new commands support a workflow for partially remapping islands:
copy a subgraph to clipboard, then merge it into a different graph.

Images

Changelog Technical Details

• Graph Editor now suppots disconnected subgraphs with distinct colors. - hannibal2
• Added /shgraphcopynetwork: copies the nearest network to clipboard. - hannibal2
• Added /shgraphmerge: imports a graph from clipboard and merges it into the current graph without overwriting. - hannibal2
• Graph Editor now show network count in stats when more than one network exists. - hannibal2

[github-actions]

3 Detekt Failures

Rules flagged (3): NoMultipleSpaces, FunctionReturnTypeSpacing, MaxLineLength

• GraphEditorIO.kt#L142 NoMultipleSpaces: Unnecessary long whitespace
• GraphEditorIO.kt#L160 FunctionReturnTypeSpacing: Single space expected between colon and return type
• GraphEditorIO.kt#L97 MaxLineLength: Line detected, which is longer than the defined maximum line length in the code style.