chore: 📝 add comprehensive coding standards and guidelines

* Introduced a new `AGENTS.md` file containing detailed coding standards for the project.
* Covers topics such as Python version support, naming conventions, type annotations, error handling, and best practices.
* Aims to improve code quality, maintainability, and team consistency.

.github/copilot-instructions.md

@@ -1,36 +0,0 @@
----
-applyTo: "**/*.py"
----
-
-# Project general coding standards
-
-## Naming Conventions
-
-- Use snake_case for variable and function names.
-- Use CamelCase for class names.
-- Follow PEP 8 style guidelines.
-- Prefix private class members with underscore (\_).
-- Use ALL_CAPS for constants.
-
-## Error Handling
-
-- Use try/except blocks for async operations.
-- Always log errors with contextual information.
-
-## Coding Guidelines
-
-- Use type annotations / hints for function and method parameters, return types and variables. Follow PEP 484.
-- Use the modern built-in generics from the `typing` module, such as `list`, `dict`, and `set`, instead of the older `List`, `Dict`, and `Set` from `typing`.
-- Use newest coding style which is supported by the used Python version.
-- Use more blank lines to achieve better code organization and readability.
-- Follow PEP 492 – Coroutines with async and await syntax
-- Follow PEP 498 – Literal String Interpolation
-- Follow PEP 572 – Assignment Expressions
-
-## Code Documentation
-
-- Always write doc strings for all modules, classes, functions, and methods using google docstring style.
-- Use typing in doc strings.
-- Use line comments to explain complex logic.
-- If refactoring code, ensure to update or add doc strings accordingly.
-- If refactoring code to not remove existing line comments, but to update them to reflect the new code logic.