refactor(rust): Add WithRowIndexNode to new-streaming engine

[orlp]

import numpy as np
import polars as pl
from timeit import timeit

n = 100_000_000
df = pl.DataFrame({"x": np.arange(n)})
query = df.lazy().with_row_index().select((pl.col.x * pl.col.index).sum())

print(timeit(lambda: query.collect(), number=50))
print(timeit(lambda: query.collect(streaming=True), number=50))
print(timeit(lambda: query.collect(new_streaming=True), number=50))

20.35326350000105
25.54412454200792
1.9409049579990096

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 62 lines in your changes missing coverage. Please review.

Project coverage is 60.12%. Comparing base (64ca265) to head (fd279a9).
Report is 36 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-stream/src/nodes/with_row_index.rs	0.00%	60 Missing ⚠️
crates/polars-stream/src/physical_plan/lower_ir.rs	0.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #19037       +/-   ##
===========================================
- Coverage   79.86%   60.12%   -19.75%     
===========================================
  Files        1524     1525        +1     
  Lines      207747   207829       +82     
  Branches     2908     2908               
===========================================
- Hits       165922   124960    -40962     
- Misses      41276    82320    +41044     
  Partials      549      549               

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[ritchie46]

@mcrumiller can you take another look at those tests? Or otherwise remove them?