Add format examples

FORMAT.md

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+FS Quiz Tool question format
+============================
+
+This document provides examples for the question format
+
+## ChooseOne
+
+Single-Choice question
+
+### Question Text
+
+```text
+How many drivers per team are allowed at most?
+```
+
+### Answer options
+
+```text
+Unlimited, but the number of drivers per event is limited to two.
+Unlimited, but the number of events per driver is limited to two.
+Six.
+```
+
+### Correct Answer(s)
+
+```text
+3
+```
+
+### Explanation
+
+```text
+D 1.1.1: "[...] a maximum of six drivers are allowed for each team"
+```
+
+### Author
+
+```text
+John Doe
+```
+
+## ChooseAny
+
+### Question Text
+
+```text
+Due to rust and corrosion of the filler neck a new one need to be installed. choose one or more of the shown filler neck types(made of none clear material) that are allowed according to the FSG rules.
+```
+
+### Answer options
+
+```text
+a
+b
+c
+d
+```
+
+### Correct Answer(s)
+
+```text
+2
+4
+```
+
+### Explanation
+
+```text
+CV 2.6
+```
+
+### Author
+
+```text
+Jane Doe
+```
+
+### Image Link
+
+```text
+https://i.ibb.co/m8C9VZp/image.png
+```
+
+## Text
+
+### Question Text
+
+```text
+Calculate the torsional- and bending-nominal stress at the critical cross section for the load case shown below. Given: P = 12kW; n = 980 1/min; F = 500 N; xkrit = 110 mm; 0 ≤ x0 ≤ 120mm
+```
+
+### Answer options
+
+```text
+Torsional-nominal stress [N/mm², 1 decimal]
+Bending-nominal stress [N/mm², 1 decimal]
+```
+
+### Correct Answer(s)
+
+```text
+17.1
+18.2
+```
+
+### Explanation
+
+```text
+https://i.ibb.co/1r3yqY7/2b.png
+```
+
+### Author
+
+```text
+Max Mustermann
+```
+
+### Image Link
+
+```text
+https://i.ibb.co/tYTdw86/2a.png
+```