Upload .bidsignore files as part of BIDS datasets

[yarikoptic]

Previously, find_dandi_files() skipped all dot-files including .bidsignore, so collaborators downloading a Dandiset would not receive this file. Now .bidsignore is allowed through the dot-file filter when inside a BIDS dataset, getting uploaded as a GenericBIDSAsset.

• Fixes Automatically upload the .bidsignore file to the Dandiset #1818 attn @kabilar

[CodyCBakerPhD]

Tests LGTM

Surprised this hasn't been caught until now

[codecov]

Codecov Report

❌ Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 75.12%. Comparing base (0fe497d) to head (6caea92).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
dandi/consts.py	0.00%	1 Missing ⚠️
dandi/files/__init__.py	66.66%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1819   +/-   ##
=======================================
  Coverage   75.11%   75.12%           
=======================================
  Files          84       84           
  Lines       11925    11930    +5     
=======================================
+ Hits         8958     8962    +4     
- Misses       2967     2968    +1     

Flag	Coverage Δ
unittests	75.12% <77.77%> (+<0.01%)	⬆️

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[yarikoptic]

dev installs fiasco

INFO: pip is looking at multiple versions of pynwb to determine which version is compatible with other requirements. This could take a while.
ERROR: Cannot install hdmf 5.0.1.dev1+g0897b93b5 (from git+https://github.com/hdmf-dev/hdmf) and pynwb==3.1.4.dev9+g5980e7a87 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested hdmf 5.0.1.dev1+g0897b93b5 (from git+https://github.com/hdmf-dev/hdmf)
    pynwb 3.1.4.dev9+g5980e7a87 depends on hdmf<5 and >=4.1.2

Additionally, some packages in these conflicts have no matching distributions available for your environment:
    hdmf

To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow p

is unrelated, let's proceed. Thanks @CodyCBakerPhD for the review