Add time limit option to search-api:index

Over MR 244 the new option is introduced.

From the commit message:

This time limit is a best effort, not a exact time out.
Given the underlying code uses Batch API to run the indexing, a more exact bail out is not truly possible.
Instead, do check after each batch is processed, and act accordingly.

Sample use:

drush search-api:index --time-limit=30 node_index

drunken monkey → made their first commit to this issue’s fork.

Looks great, thanks a lot! And sorry for taking so long to reply.
I just had some minor nitpicks and made some code style changes, otherwise this looks good to go.
Feel free to review my changes and tell me what you think, otherwise I’ll just merge this in a week or so.

Looks great, thanks a lot! And sorry for taking so long to reply.

🎉 Thanks for maintaining this project!

I just had some minor nitpicks and made some code style changes, otherwise this looks good to go.

Those changes look quite good, thanks!

Found a minor issue when passing a time limit of 0. The code seems to specifically allow for this, but then any time limit of 0 is converted into -1.

@kristiaanvandeneynde: Thanks for catching that, you’re right.
Should be fixed now.