Add Saakuru blockchain

[aagkotryna]

Adding a new chain to the Explorer
To get a new chain added to the Explorer, you will need to submit the following:

1. JSON-RPC spec for Wallets (only if one doesn't already exist). For more information, please review the Ethereum [JSON-RPC API docs]
   https://rpc.saakuru.network/ (https://ethereum.org/en/developers/docs/apis/json-rpc/).
   GitHub Link:
2. Write a CASA namespace spec if not already available for this namespace.
   GitHub Link:
3. namespaces:
   eip155
4. chains:
   (mainnet: eip155:7225878, testnet: eip155:247253)
   mainnet id: 7225878, testnet id: 247253
5. RPC endpoints
   Saakuru Mainnet: https://rpc.saakuru.network/
   Saakuru Testnet: https://rpc-testnet.saakuru.network/
6. SLIP-0044 coin type:
   685

References
To ensure timely processing of your request, please provide the following references:

• Source of RPC endpoints (e.g. RPC docs): [https://source.saakuru.com/saakuru-source/saakuru-blockchain/environments]
• Source of namespace (if non-EIP155) chain information (particularly chainIds): [https://source.saakuru.com/saakuru-source/saakuru-blockchain/environments]

Additional context
Saakuru Blockchain is an EVM-compatible high-speed public-permissioned L2 blockchain built on Oasys rollups. It solves major user experience and interoperability problems in Web3 - gas fees, slow transaction confirmation times, and security vulnerabilities.

We're working with multiple dapps already which support Saakuru Blockchain, and we want to allow interactions not only from our Apps Browser, but also via wallet connect feature to access dapps on desktop.

Docs available here: https://source.saakuru.com/saakuru-source/saakuru-blockchain/environments

Please note:

Registering a chain with the Explorer does not impact or improve the ability for wallets and dapps to support your chain. It is simply a way for users to discover wallets and dapps that support your chain by:

• Browsing the Chains List
• Filtering results programmatically via the Explorer API

It is still up to wallets and dapps to provide concrete support for your chain once it is listed as part of the Explorer.

• I have read and understood the above clarification

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CR-26 Add Saakuru blockchain