feat: add C implementation for `@stdlib/stats/base/dists/poisson/quantile`#4893

saurabhraghuvanshii wants to merge 2 commits intostdlib-js:developstdlib-js/stdlib:developfrom

saurabhraghuvanshii:poisson-quantilesaurabhraghuvanshii/stdlib-gs:poisson-quantileCopy head branch name to clipboard