Publish both ESM and CJS

[x] Move over Sample Size Calculator
[x] Security audit
[x] Format with prettier
[x] Lint check
[x] Spell check
[x] Test
[x] Update package.json (see below)
[x] Build to cjs and esm
[x] Release with semantic-release

These are the important parts of the package.json

"main": "./dist/cjs/index.js",
"module": "./dist/esm/index.js",
"types": "./dist/cjs/index.d.ts",
"files": [
    "dist"
],
"scripts": {
    "build:cjs": "tsc --project tsconfig.cjs.json",
    "build:esm": "tsc --project tsconfig.esm.json",
    "build": "rm -rf dist && npm run build:cjs && npm run build:esm",
}

!! BE SURE AND REMOVE "type": "module" !!

surveyplanet / utilities

Publish both ESM and CJS #8