chore: include pop cli to README (#1881)

Author: al3mart

README.md

@@ -66,6 +66,7 @@ Please add your project to this list via a PR.
 - [ink!](https://github.com/paritytech/ink) Smart contract language that uses `subxt` for allowing developers to conduct [End-to-End testing](https://use.ink/basics/contract-testing/end-to-end-e2e-testing) of their contracts.
 - [Chainflip](https://github.com/chainflip-io/chainflip-backend) A decentralised exchange for native cross-chain swaps.
 - [Hyperbridge](https://github.com/polytope-labs/hyperbridge) A hyperscalable coprocessor for verifiable cross-chain interoperability.
+- [pop CLI](https://github.com/r0gue-io/pop-cli) The all-in-one tool for Polkadot development.
 
 **Alternatives**