Add temp table bulk loading

[davidtme]

Proposed Changes

This allows you to bulk load temp tables which can then be used in queries such as merging large amounts of data.

I added a similar feature to FSharp.Data.SqlClient as I use this in a ETL process.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• Build and tests pass locally
• I have added tests that prove my fix is effective or that my feature works (if appropriate)
• I have added necessary documentation (if appropriate)

Notes

The naming of the function such as createTempTable, tempTableData and loadTempTable as well as the structure of their use completely open debate but I found this parameter structure easy to work with in the Analyzer

As the structure could change I will add documentation once it has been agreed.

[davidtme]

I'm not sure how to get the appveyor working but I'm not sure it's todo with my PR.

[Numpsy]

This is a bit of a guess (my knowledge of appveyor is quite slim), but the appveyor config file might need to specify which CI image to use to make sure it has the new enough tools (netcore3 etc).

Possibly try adding

image: Visual Studio 2019

to the appveyor.yml file?