[FEA] controllable n-hop ranges and cypher syntax parity

[lmeyerov]

Is your feature request related to a problem? Please describe.

In question #842 , there was discussion of a few n-hop capabilities:

• specify e(hops_min=m, hops_max=n) (m...n in neo4j) vs current e(hops=n) meaning range 1..n

• match cypher's default of e(hops=n) being shorthand for n..n (exact)

• some opt-in way to label nodes/edges by path step(s) they're encountered on

Describe the solution you'd like

1. e(hops=n) now means n..n <-- breaking change
2. e(hops_min=m, hops_max=n) now means m..n
3. Option like e(mark_hops=True) or a globa like chain(...., mark_hops=True), and/or ability to know within one e() or wrt global path length. Very unclear if precedent to build on here.

Additional context

When we add path semantics, this gets even more interesting

[lmeyerov]

Also, the labeling can be worked around for typical cases: #842 (comment)