Use Tabler illustrations instead of the ones from undraw (#1811)

* Use Tabler illustrations instead of undraw library

* Create heavy-ladybugs-grab.md

* illustration fixes

* replace img to svg

---------

Co-authored-by: Bartłomiej Gawęda <bgaweda@abis.krakow.pl>
Co-authored-by: Paweł Kuna <1282324+codecalm@users.noreply.github.com>
Co-authored-by: codecalm <codecalm@gmail.com>

gulpfile.js

@@ -367,7 +367,7 @@ gulp.task('mjs', () => {
  */
 gulp.task('watch-jekyll', (cb) => {
 	browserSync.notify('Building Jekyll')
-	return spawn('bundle', ['exec', 'jekyll', 'build', '--watch', '--incremental', '--destination', demoDir, '--trace'], { stdio: 'inherit' })
+	return spawn('bundle', ['exec', 'jekyll', 'build', '--watch', '--destination', demoDir, '--trace'], { stdio: 'inherit' })
 		.on('close', cb)
 })