Add Support for Parameter Binding Arrays

[athmihir]

Issue number of the reported bug or feature request: #

Describe your changes
Add the ability to parameter bind carrays in dbapi2 through python lists, or tuples of type: int, float. string or bytes.
This is by exposing the cdb2_bind_array function present in cdb2api.

Testing performed
Add pytests that try all combinations of accepted parameters. ie. lists and tuples of allowed data types.

Additional context
None.

[godlygeek]

I've taken a first look at this. It looks quite good, though I've made some small improvements. I plan to take another look tomorrow.

[athmihir]

@godlygeek sounds good. Looks like DCO is failing

[godlygeek]

Looks like DCO is failing

Yep, that's fine. I didn't bother signing my fixup commits, since I plan to squash them into your commits.

[godlygeek]

This PR now looks good to me, though I'd like another set of eyes on it (probably @gusmonod) since I made some changes here myself.

We're going to hold off on merging this PR for a little while, though. We're gonna merge this after we cut a new release that officially drops support for versions prior to Python 3.7 (hopefully later this week).

[athmihir]

Sounds good, thanks for the review. Looking forward to getting it merged! 😄

[sarahmonod]

There is one thing that doesn't make sense to me, and that is the allocation of the memory for the arrays of bytes.

I wonder if maybe it needs to be done because of the fact that the data in python lists and tuples may not be contiguous… 🤔 either way, would like to know what you all think about it.

[sarahmonod]

LGTM. I've just rebased it to check that the tests do indeed all pass, and I have changed six.integer_type to int instead in the test code (now that we no longer use six).

The only thing missing for this to be merged is the merging of all commits, @athmihir would you please do it?