fix: wrap future streams also in io_runtime

[ion-elgreco]

@alamb pointed out that the get stream would be not executed on the IO runtime unless it was wrapped. So thanks to his example PR I've added this now for the other streams :) Thanks @alamb!

Also addressed some other missing areas where I should have enabled the IO runtime:

• DeltaFileSystemHandler
• Creating a table
• Is Delta Table check
• Writing a new table (used by pyarrow engine)
• Writing a new table (rust engine)

I've also made it possible to pass an optional runtime in DeltaOps::try_from_uri, since this was missing but it seems a common used entry point to open a delta table

[ion-elgreco]

@Tom-Newton can you give this a spin?

[codecov]

Codecov Report

Attention: Patch coverage is 12.57143% with 153 lines in your changes missing coverage. Please review.

Project coverage is 71.53%. Comparing base (f7745fd) to head (01da20b).

Files with missing lines	Patch %	Lines
crates/core/src/storage/mod.rs	0.00%	133 Missing ⚠️
crates/core/src/operations/mod.rs	40.00%	7 Missing and 2 partials ⚠️
python/src/lib.rs	0.00%	7 Missing ⚠️
crates/benchmarks/src/bin/merge.rs	0.00%	2 Missing ⚠️
crates/core/src/protocol/checkpoints.rs	66.66%	1 Missing ⚠️
python/src/filesystem.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3162      +/-   ##
==========================================
- Coverage   71.76%   71.53%   -0.23%     
==========================================
  Files         138      138              
  Lines       44362    44492     +130     
  Branches    44362    44492     +130     
==========================================
- Hits        31835    31829       -6     
- Misses      10495    10620     +125     
- Partials     2032     2043      +11     

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