feat: Add bb and bb_runtime output options

[harkal]

What I did

Currently running tests with experimental codegen was failing due to ir_dict output not being compatible.
This small patch rectifies all that and adds bb and bb_runtime as output options

How I did it

How to verify it

Commit message

Add bb and bb_runtime output options

Description for the changelog

Cute Animal Picture

[charles-cooper]

i think i would rather have a new output type (bring back -f bb!) rather than changing the type of -f ir depending on the experimental mode

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (ddfce52) 84.22% compared to head (8ea6d34) 84.15%.

❗ Current head 8ea6d34 differs from pull request most recent head e4b81b8. Consider uploading reports for the commit e4b81b8 to get more accurate results

Files	Patch %	Lines
vyper/compiler/output.py	50.00%	2 Missing ⚠️

❗ Your organization needs to install the Codecov GitHub app to enable full functionality.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3700      +/-   ##
==========================================
- Coverage   84.22%   84.15%   -0.08%     
==========================================
  Files          92       92              
  Lines       13073    13038      -35     
  Branches     2916     2919       +3     
==========================================
- Hits        11011    10972      -39     
- Misses       1644     1646       +2     
- Partials      418      420       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[charles-cooper]

i think maybe for test cleanliness we can introduce a new fixture output_formats

@pytest.fixture
def output_formats():
    return [k for k in compiler.OUTPUT_FORMATS.keys() if k not in ("bb", "bb_runtime")

[charles-cooper]

thanks!