👌 Performance: Memoize Inline parser for build_need

[chrisjsewell]

As discussed in #967, build_need (called from print_need_nodes) is currently taking a large amount of build times.

A key reason for this is that the initialisation of the inline parser, which requires compiling numerous regexes, is being run on every call.
This is not required, since the initialisation is invariant.

In this PR therefore, we move the initialisation to a cached function, which will only run once per build.

As shown when using phinx-analysis --project needs --pyinstrument --tree --tree-filter 0.01, compared to #967, this significantly reduces the print_need_nodes component of the build time; from taking ~25% to ~8%

In this example it reduces the total build time from ~1.6 seconds to ~1.2 seconds

[danwos]

Wow cool, learned some interesting new caching features from the code.
The code looks good.

Can you add also a small line to our /docs/cahngelog.rst file?
Feel also free to add yourself to our AUTHORS file as well.

I'm looking forward to merge this and see it in action for bigger projects.

[chrisjsewell]

Can you add also a small line to our /docs/cahngelog.rst file?
Feel also free to add yourself to our AUTHORS file as well.

done @danwos 👍

[danwos]

Thanks, looks good 👍