Packaging configuration for export of core module

Per issue #52

packaging/README.md

@@ -0,0 +1,26 @@
+# starlink-grpc-tools Core Module
+
+This project packages up the `starlink_grpc` module from the [starlink-grpc-tools](https://github.com/sparky8512/starlink-grpc-tools) project and exports it as an installable package for use by other projects. It is not needed to install this project in order to use the scripts in starlink-grpc-tools, as those have their own copy of `starlink_grpc.py`.
+
+`starlink_grpc.py` is the only part of the scripts in starlink-grpc-tools that is designed to have a stable enough interface to be directly callable from other projects without having to go through a clunky command line interface. It provides the low(er) level core functionality available via the [gRPC](https://grpc.io/) service implemented on the Starlink user terminal.
+
+# Installation
+
+The most recently published version of this project can be installed by itself using pip:
+```shell script
+pip install starlink-grpc-core
+```
+However, it is really meant to be installed as a dependency by other projects.
+
+# Usage
+
+The installation process places the `starlink_grpc.py` module in the top-level of your Python lib directory or virtual environment, so it can be used simply by doing:
+```python
+import starlink_grpc
+```
+and then calling whatever functions you need. For details, see the doc strings in `starlink_grpc.py`.
+
+# Examples
+
+For example usage, see calling scripts in the [starlink-grpc-tools](https://github.com/sparky8512/starlink-grpc-tools) project, most of which are hopelessly convoluted, but some of which show simple usage of the `starlink_grpc` functions.
+

packaging/pyproject.toml

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+[build-system]
+requires = [
+    "setuptools>=42",
+    "setuptools_scm[toml]>=3.4",
+    "wheel"
+]
+build-backend = "setuptools.build_meta"
+
+[tool.setuptools_scm]

packaging/setup.cfg

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+[metadata]
+name = starlink-grpc-core
+url = https://github.com/sparky8512/starlink-grpc-tools
+author_email = sparky8512-py@yahoo.com
+license_files = ../LICENSE
+classifiers =
+    Development Status :: 4 - Beta
+    Intended Audience :: Developers
+    License :: OSI Approved :: The Unlicense (Unlicense)
+    Operating System :: OS Independent
+    Programming Language :: Python :: 3
+    Topic :: Software Development :: Libraries :: Python Modules
+description = Core functions for Starlink gRPC communication
+long_description = file: README.md
+long_description_content_type = text/markdown
+
+[options]
+install_requires =
+    grpcio>=1.12.0
+    protobuf>=3.6.0
+    yagrc>=1.1.1
+package_dir =
+    =..
+py_modules =
+    starlink_grpc
+python_requires = >=3.7

packaging/setup.py

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+import setuptools
+
+setuptools.setup()