feat(json-researcher): add subject, test and solution for new a exercise

sh/tests/json-researcher_test.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+# Unofficial Bash Strict Mode
+set -euo pipefail
+IFS='
+'
+
+echo insecure >> ~/.curlrc
+caddy start &>/dev/null
+
+submitted=$(bash student/json-researcher.sh)
+expected=$(bash solutions/json-researcher.sh)
+
+caddy stop &>/dev/null
+
+diff <(echo "$submitted") <(echo "$expected")

sh/tests/solutions/json-researcher.sh

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+curl -s https://content.01-edu.org/assets/superhero/all.json | jq '.[] | select(.id==1)' | grep "name\|\"power\""

subjects/json-researcher/README.md

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+## json-researcher
+
+### Instructions
+
+Create the script `json-researcher.sh` wich will show the "name" and the "power" of the superhero with `id: 1`
+
+- Where to look : https://((DOMAIN))/assets/superhero/all.json
+
+- What to use : `curl` and `jq` and `grep`
+
+- The output should be exactly like the example bellow but with the expected name
+
+```console
+$./json-researcher.sh | cat -e
+  "name": "<...>",$
+    "power": <...>,$
+$
+```
+
+### Hints
+
+With `curl` you can get the content of the file from the url:
+```console
+$curl https://assets.01-edu.org/devops-branch/HeadTail.txt
+<...>
+$
+```
+
+`jq` is a command-line utility that can slice, filter, and transform the components of a JSON file
+
+```console
+$cat fruit.json
+{
+  "name": "apple",
+  "color": "green",
+  "price": 1.0
+}
+$jq '.color' fruit.json
+"green"
+$
+```
+
+`grep` is a command-line utility for searching plain-text data sets for lines that match a regular expression.
+
+```console
+$cat fruit.json  
+{
+  "name": "apple",
+  "color": "green",
+  "price": 1.0
+}
+$cat fruit.json | grep color
+  "color": "green",
+$
+```
+
+May you will need to use `pipe (|)` and `&&`.
+
+> You have to use Man or Google to know more about commands flags, in order to solve this exercice!
+> Google and Man will be your friends!