Add type hints for (DataFrame|Series)._data

[topper-123]

• xref Annotate DataFrame (API exposed items from pandas.core.api) #26792

This PR add a type hint for (DataFrame|Series)._data and NDFrame.__init__. This makes it easier to work with the BlockManager in Pandas.

[codecov]

Codecov Report

Merging #26871 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #26871      +/-   ##
==========================================
- Coverage   91.88%   91.87%   -0.01%     
==========================================
  Files         179      179              
  Lines       50696    50699       +3     
==========================================
- Hits        46581    46579       -2     
- Misses       4115     4120       +5

Flag	Coverage Δ
#multiple	90.46% <100%> (ø)	⬆️
#single	41.1% <100%> (-0.08%)	⬇️

Impacted Files	Coverage Δ
pandas/core/series.py	93.64% <100%> (ø)	⬆️
pandas/core/generic.py	94.2% <100%> (ø)	⬆️
pandas/io/gbq.py	88.88% <0%> (-11.12%)	⬇️
pandas/core/frame.py	96.88% <0%> (-0.12%)	⬇️
pandas/util/testing.py	90.84% <0%> (-0.11%)	⬇️

---

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[codecov]

Codecov Report

Merging #26871 into master will decrease coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #26871      +/-   ##
==========================================
- Coverage   91.88%   91.87%   -0.01%     
==========================================
  Files         179      179              
  Lines       50696    50699       +3     
==========================================
- Hits        46581    46579       -2     
- Misses       4115     4120       +5

Flag	Coverage Δ
#multiple	90.46% <100%> (ø)	⬆️
#single	41.1% <100%> (-0.08%)	⬇️

Impacted Files	Coverage Δ
pandas/core/series.py	93.64% <100%> (ø)	⬆️
pandas/core/generic.py	94.2% <100%> (ø)	⬆️
pandas/io/gbq.py	88.88% <0%> (-11.12%)	⬇️
pandas/core/frame.py	96.88% <0%> (-0.12%)	⬇️
pandas/util/testing.py	90.84% <0%> (-0.11%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 430f0fd...8769366. Read the comment docs.

[jreback]

thanks @topper-123