Create "Quick start" page

[cspotcode]

Implements and closes #1742

Just starting to jot down ideas.

[codecov[bot]]

Codecov Report

Merging #1776 (5d99b39) into docs (d6fefb7) will increase coverage by 0.28%. The diff coverage is 80.02%.

Impacted Files	Coverage Δ
dist-raw/node-internal-repl-await.js	82.97% <ø> (ø)
dist-raw/node-options.js	78.37% <ø> (ø)
src/transpilers/swc.ts	82.75% <ø> (+8.94%)	:arrow_up:
src/ts-transpile-module.ts	75.47% <ø> (ø)
src/tsconfigs.ts	93.75% <ø> (ø)
src/util.ts	92.30% <ø> (-1.64%)	:arrow_down:
transpilers/swc.js	100.00% <ø> (ø)
src/child/child-require.ts	41.66% <41.66%> (ø)
src/repl.ts	79.82% <64.28%> (-2.94%)	:arrow_down:
dist-raw/node-internal-modules-cjs-loader.js	71.86% <71.86%> (ø)
... and 34 more