docs: enhance README.md with key features and usage (#82)

* docs(readme): add `Usage` section

* docs(readme): add `Key Features` section

* docs(readme): add version and license badges

Author: threeal

README.md

@@ -1,6 +1,22 @@
 # C++ Starter
 
+[![version](https://img.shields.io/github/v/release/threeal/cpp-starter?style=flat-square)](https://github.com/threeal/cpp-starter/releases)
+[![license](https://img.shields.io/github/license/threeal/cpp-starter?style=flat-square)](./LICENSE)
 [![build status](https://img.shields.io/github/actions/workflow/status/threeal/cpp-starter/build.yaml?branch=main&style=flat-square)](https://github.com/threeal/cpp-starter/actions/workflows/build.yaml)
 [![test status](https://img.shields.io/github/actions/workflow/status/threeal/cpp-starter/test.yaml?branch=main&label=test&style=flat-square)](https://github.com/threeal/cpp-starter/actions/workflows/test.yaml)
 
 The C++ Starter is a [GitHub repository template](https://docs.github.com/en/repositories/creating-and-managing-repositories/creating-a-repository-from-a-template) that provides a minimalistic boilerplate to kickstart your [C++](https://isocpp.org) project. This template offers a streamlined foundation, complete with predefined file structures, essential tools, and recommended settings, ensuring a swift and efficient start to your C++ development journey.
+
+## Key Features
+
+- Utilizes [CMake](https://cmake.org/) as the build system generator.
+- Integrates [CPM.cmake](https://github.com/cpm-cmake/CPM.cmake/) for efficient package management.
+- Incorporates [Catch2](https://github.com/catchorg/Catch2) as the testing framework.
+- Enforces consistent code formatting through [Format.cmake](https://github.com/TheLartians/Format.cmake).
+- Implements static analysis by enabling warnings using [CheckWarning.cmake](https://github.com/threeal/CheckWarning.cmake/).
+- Comes with a preconfigured [GitHub Actions](https://github.com/features/actions) workflow for continuous integration.
+- Supports automatic dependency updates through [Dependabot](https://docs.github.com/en/code-security/dependabot) in GitHub Actions.
+
+## Usage
+
+Refer to [this wiki](https://github.com/threeal/cpp-starter/wiki) for information on how to use this template.