Add vivado vlog support

[codecov-commenter]

Codecov Report

Merging #100 (feb2af5) into master (1298325) will decrease coverage by 6.13%. The diff coverage is 50.00%.

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@@            Coverage Diff             @@
##           master     #100      +/-   ##
==========================================
- Coverage   94.98%   88.86%   -6.13%     
==========================================
  Files          31       30       -1     
  Lines        2733     2730       -3     
  Branches      401      404       +3     
==========================================
- Hits         2596     2426     -170     
- Misses         88      247     +159     
- Partials       49       57       +8     

Impacted Files	Coverage Δ
hdl_checker/builders/xsim.py	47.94% <30.00%> (ø)
hdl_checker/builder_utils.py	97.84% <100.00%> (ø)
hdl_checker/serialization.py	85.00% <100.00%> (ø)
hdl_checker/builders/ghdl.py	48.14% <0.00%> (-46.92%)	:arrow_down:
hdl_checker/builders/msim.py	64.75% <0.00%> (-30.33%)	:arrow_down:
hdl_checker/server.py	72.97% <0.00%> (-24.33%)	:arrow_down:
hdl_checker/parser_utils.py	85.16% <0.00%> (-9.04%)	:arrow_down:
hdl_checker/utils.py	89.34% <0.00%> (-8.29%)	:arrow_down:
hdl_checker/builders/base_builder.py	86.70% <0.00%> (-4.44%)	:arrow_down:
... and 2 more

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