new sample flow on using deep-learning model based in python to do inferencing of images for face detection. commit message is that way for easier browsing in samples folder

- supports [enter] and [clear] keywords just like the standard type step for webpages
- trigger word is page.png and page.bmp, just like steps snap, read, show, save

Co-Authored-By: Alvin Yan <aussiroth@users.noreply.github.com>
Co-Authored-By: Victor Loh <lohvht@users.noreply.github.com>

Co-Authored-By: Alvin Yan <aussiroth@users.noreply.github.com>
Co-Authored-By: Victor Loh <lohvht@users.noreply.github.com>

more details of these cool tools by @adegard at issue #188 !

Co-Authored-By: adegard <degardinarnaud@gmail.com>

Co-Authored-By: Alvin Yan <aussiroth@users.noreply.github.com>
Co-Authored-By: Victor Loh <lohvht@users.noreply.github.com>

* #216 - experimenting with using signal variable
* #216 - possible solution found
use casper.bypass() to count how many steps to teleport to and bypass when a break statement is issued. nice catch @Aussiroth !
* #216 - use teleport marker
* #216 - use stricter matching conditions
* #216 - more complicated test
* #216 - cleaned up to work for break step
* #216 - initial implementation of continue
doesn't work but don't break existing break test case.
* #216 - working version of continue + break
* #216 - add infinity constant for looping
eg

for n from 1 to infinity
{
echo n
}

if constant too big, takes very large to build stack before execution. trade-off decided to be 1024

Co-Authored-By: Alvin Yan <aussiroth@users.noreply.github.com>
Co-Authored-By: Victor Loh <lohvht@users.noreply.github.com>

Co-Authored-By: Alvin Yan <aussiroth@users.noreply.github.com>
Co-Authored-By: Victor Loh <lohvht@users.noreply.github.com>