Extend readme with TODO sections

Author: ewarchul

README.md

@@ -2,7 +2,20 @@
 
 **{cecxx}** is an implementation of IEEE Congress on Evolutionary Computation (CEC) benchmarks in C++20. 
 
-
 > [!WARNING]  
 > This library is under active development. Currently, only the CEC-2017 edition is complete.
 > If you want to use slightly better implementations of other editions than those proposed by the competition organizers, go to branch [legacy-c](https://github.com/ewarchul/cecxx/tree/legacy-c). 
+
+## Compliance testing
+
+## Motiviation
+
+## Features
+
+## Installation
+
+## Usage 
+
+## Benchmarks
+
+## Running the tests