Claim rewards of rivalz project

Description

the script checks the available rewards and collects them.

in the current version of the script, it is only possible to get a list of tokens available for claim.

These instructions will guide you on how to install and set up the project on your local machine.

Prerequisites:
- Node.js: This project requires Node.js to be installed. It is recommended to use a Node.js version manager like nvm or fnm to manage different Node.js versions.

Clone the repository:

git clone https://github.com/kertio/rivalz_claimer.git
cd rivalz_claimer

Install dependencies:
```
npm install
```
This command installs all the necessary dependencies listed in the package.json file.

Instructions on how to run and use your project after installation.

Create a file with private keys:
```
touch pk.txt
nano pk.txt
```
Сreate a file pk.txt in project folder. Add private keys to the file pk.txt
Run the script:
```
npm run dev:claim
```
This command will run the script to execute