Add support for running query needed to generate top subject lines insight

[NickkTMD]

Currently kgraph supports operations like traversals, shortestPath, and findByVertices. Many insights will need more complicated queries with more complex filters.

for top subject lines, we will want something like:

CORRECTED QUERY:

FOR v, e, p IN 2..2 ANY @company GRAPH "kgraph"
    FILTER (FOR v2, e2 IN 1..1 ANY p.vertices[1] GRAPH "kgraph" FILTER v2._id == "action/email" RETURN 1) == [1] 
    RETURN (FOR v2, e2 IN 1..1 ANY p.vertices[1] GRAPH "kgraph" FILTER IS_SAME_COLLECTION("subject", v2) RETURN {"subject": v2.subject, "occurrences": 1/e2.weight})

Where @company is the _key value of the company we are looking at, and @startingDate and @endingDate define a date range (dates are strings like 06/27/2022).

Acceptance Criteria:

1. kgraph repo can be used to run query which returns json data from which top subjects insight can be calculated.

[mike-audi]

api works but either the query or the kgraph itself isn't working.

[mike-audi]

ingest service is the issue.

[NickkTMD]

corrected query:

FOR v, e, p IN 2..2 ANY @company GRAPH "kgraph"
    FILTER (FOR v2, e2 IN 1..1 ANY p.vertices[1] GRAPH "kgraph" FILTER v2._id == "action/email" RETURN 1) == [1] 
    RETURN (FOR v2, e2 IN 1..1 ANY p.vertices[1] GRAPH "kgraph" FILTER IS_SAME_COLLECTION("subject", v2) RETURN {"subject": v2.subject, "occurrences": 1/e2.weight})

assuming the email has _id "action/email". v2.subject should be changed depending on subject line property name.