Optionally render AssetGraph to GraphViz dot format

[alshdavid]

Trying to debug determinism bugs in v3, wrote a little renderer that converts the AssetGraph into GraphViz dot format.

export DEBUG_ASSET_GRAPH_DOT="./asset_graph.dot" 

#optional 
export DEBUG_ASSET_GRAPH_DOT_STYLE="true" 
export DEBUG_ASSET_GRAPH_DOT_SORT="true" 

npx atlaspack build

cat ./asset_graph.dot

[benjervis]

.