Rename and rewrite SPARQL query vertexLabelsTemplate.ts

[charlesivie]

graph-explorer/packages/client/src/connector/sparQL/templates/vertexLabelsTemplate.ts

Line 5 in 2a99b24

return "SELECT ?vertexType (COUNT(?vertexType) as ?count) {?start a ?vertexType} GROUP BY ?vertexType";

This file uses terms that don't make sense in the RDF world. Please rename the file to the following:
instancesOfClassesCounts.ts

and rewrite the query withe the following terms:

/**
 * Fetch all classes and counts of instances of them
 */
SELECT ?class (COUNT(?class) as ?count) 
{
     ?s a ?class
} 
GROUP BY ?class

[charlesivie]

Query re-written by dev team and signed off by myself, should sync to this github soon.