📝 docs: added json arg type docs

Signed-off-by: Muhammed Hussein Karimi <[email protected]>

docs/tutorial/parameter-types/json.md

@@ -0,0 +1,37 @@
+# JSON
+
+To use JSON inputs use `dict` as Argument type
+
+it will do something like
+
+```python
+import json
+
+data = json.loads(user_input)
+```
+
+## Usage
+
+You will get all the correct editor support, attributes, methods, etc for the dict object:`
+
+//// tab | Python 3.7+
+
+```Python hl_lines="5"
+{!> ../docs_src/parameter_types/json/tutorial001.py!}
+```
+
+////
+
+Check it:
+
+<div class="termy">
+
+```console
+// Run your program
+$ python main.py --user-info '{"name": "Camila", "age": 15, "height_meters": 1.7, "female": true}'
+
+User Info: {"name": "Camila", "age": 15, "height_meters": 1.7, "female": true}
+
+```
+
+</div>