Add simple unit test and support processing UO results only

[nllong]

This PR does a few things:

1. Enable processing of results of running only URBANopt (without DES and no real meter data)
2. Create building level tabular data of energy, intensities, and gross floor areas
3. Allow aggregations of all the building loads to be used in a single DES model. If there is no sharing of energy between buildings (and no sources/sinks between buildings), then this will enable much faster run times in UO DES.

[vtnate]

Technically this looks fine. Couple dumb nit-picks. My main problem is that this repo doesn't have a readme. Can you add some sort of instructions on how to use it? I don't know how to test your code.

[nllong]

@vtnate -- i made the updates and includes a very simple unit test.

The issue now is that I can't update poetry.lock due to an SSL issue. Can you try? Just checkout this branch and run poetry update. I keep getting this message

Updating dependencies
Resolving dependencies... (0.4s)

HTTPSConnectionPool(host='github.com', port=443): Max retries exceeded with url: /urbanopt/modelica-builder.git/info/refs?service=git-upload-pack (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)')))

[vtnate]

I didn't have the SSL issue, but Poetry did tell me there was some incompatibility with the toml library. The internet tells me that tomli is the blessed package now, not toml (and in Python 3.11 it's included in Python as tomllib). When Poetry gives me grief I delete the poetry.lock file and do poetry install to start from scratch. That usually helps Poetry get over its confusion.

[vtnate]

Whoa. Tomli wasn't happy either, and then I got 429 Client Error: Too Many Requests for url: https://github.com/antlr4-python3-runtime/ (all from poetry install). Maybe it's antlr that's struggling?

[nllong]

yeah, it works if you comment out Modelica-builder, it is will create the updated lock file. Crazy, right?