First version of Scrapling full documentation

docs/api-reference/custom-types.md

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+# Custom Types API Reference
+
+Here's the reference information for all custom types of classes Scrapling implemented, with all their parameters, attributes, and methods.
+
+You can import all of them directly like below:
+
+```python
+from scrapling.core.custom_types import TextHandler, TextHandlers, AttributesHandler
+```
+
+## ::: scrapling.core.custom_types.TextHandler
+    handler: python
+    :docstring:
+
+## ::: scrapling.core.custom_types.TextHandlers
+    handler: python
+    :docstring:
+
+## ::: scrapling.core.custom_types.AttributesHandler
+    handler: python
+    :docstring: