Enhance README with Folder Descriptions

### Description:
We would like to improve the clarity and transparency of our repository by adding a small section to the README file that provides descriptions for the different high-level folders present. This will help users understand where to find specific information within the repository.

### Required Changes:

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## Repository Directory
Below are the details about the different high-level folders present in the repository and content they have.

### 1. NP Logs
**Description:** Contains Network Participant's logs aimed at enhancing spec governance, compliance, and transparency. Explore this folder to gain insights into the implementation from network participants.

### 2. api
**Description:** Contains domain-specific API specifications in YAML format. This folder also includes a submodule that points to a particular version of the core specification. Developers and contributors can refer to this section for comprehensive API details and the underlying core specifications.

### 3. docs
**Description:** This folder serves as a documentation hub, covering various aspects of our project. It includes an introduction to the domain, related terminology, details about the project's scope and out-of-scope elements, implementation guides, and assets used across these documents. Users can refer to this section for a holistic understanding of our project.

### 4. example
**Description:** Contains JSON examples of all the APIs, including but not limited to search, select, init, confirm, etc. Each sub-domain is represented with its respective API examples. Developers can use these examples as templates or references when implementing specific features, ensuring consistency and accuracy across the project.

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### Expected Outcome:
Users visiting our repository should have a clear understanding of the purpose and contents of each folder, making it easier for them to locate the information they are seeking.

## Additional Notes:
Feel free to contribute to this issue with any suggestions or improvements on how we can enhance the folder descriptions for better user navigation.