PI Day: Find sequence in PI

An idea of a coding challenge for PI Day (my first contribution yey :smiley:):

Search for a given sequence of number in the digits of PI like the birth date of the user or its phone number.
It is not required to compute a big number of digits of PI, it can instead be loaded from an online file.

It would be a nice occasion to cover a string search algorithm like the [Boyer-Moore](https://en.wikipedia.org/wiki/Boyer%E2%80%93Moore_string-search_algorithm) algorithm which is **very interesting** to show to beginners to learn how a simple search can be optimized using a bit of logic (and learn why the search is **faster with a longer sequence** to search for !).

Here is an example website doing this sequence localisation in PI digits: [https://www.angio.net/pi/](https://www.angio.net/pi/)