various improvements for pypsa and amiris loader

[maurerle]

We did have some problems with the Amiris and PyPSA loaders, which are about to be fixed in this PR.

This also fixes the deprecation warning in PyPSA.

When running a distributed simulation using MQTT, it helps to set_tcp_nodelay=true in the MQTT config to improve performance a lot.

[codecov]

Codecov Report

Attention: Patch coverage is 17.50000% with 33 lines in your changes missing coverage. Please review.

Project coverage is 76.40%. Comparing base (7457a21) to head (a89e414).

Files with missing lines	Patch %	Lines
...ssume/markets/clearing_algorithms/nodal_pricing.py	0.00%	18 Missing ⚠️
assume/common/grid_utils.py	0.00%	13 Missing ⚠️
assume/markets/clearing_algorithms/redispatch.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #509      +/-   ##
==========================================
- Coverage   76.55%   76.40%   -0.16%     
==========================================
  Files          51       51              
  Lines        6871     6890      +19     
==========================================
+ Hits         5260     5264       +4     
- Misses       1611     1626      +15     

Flag	Coverage Δ
pytest	76.40% <17.50%> (-0.16%)	⬇️

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[maurerle]

This shows the actual power flows on the grid dashboard:
We should implement flows for redispatch and naive solution as well

demo-assume2--general-assume-nodal-view--nodalview.mp4

(Sequence done with grafanimate --scenario=demo.py:assume_grid --output=./animations --use-panel-events --headless and a demo.py file)

after running assume -s example_01d -c nodal_case -db "postgresql+psycopg2://assume:assume@localhost:5432/assume"