Consolidate Pyblish RPC

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Goal

Marry Pyblish RPC with Pyblish QML in an effort to simplify use, understanding and maintenance.

Motivation

Pyblish RPC was developed in isolation with the intent of other interfaces making use the general feature set it provides. As it turns out, Pyblish QML was its only user, and as such they may safely be developed together.

The end result should be more robust releases (no more version conflicts) and overall less to worry about.

Implementation

Pyblish RPC will become pyblish_qml.rpc within the Pyblish QML project, any hosts interested in communicating with Pyblish QML must now have access to Pyblish QML (not necessarily PyQt5, or QML the run-time).

# From e.g. Maya
import pyblish_qml
pyblish_qml.communicate()

# From any terminal
python -m pyblish_qml

[mottosso]

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