feat: add foundry in SDK (#81)

* feat: add foundry in SDK

* feat: compile with cancun in foundry.toml

docs/starknet/ecosystem/sdks/foundry.md

@@ -0,0 +1,69 @@
+---
+title: Foundry
+sidebar_position: 3
+---
+
+> [Foundry](https://github.com/foundry-rs/foundry) is a development environment for Ethereum which is wriiten in Rust
+
+You can clone [this](https://github.com/ChiHaoLu/kakarot-foundry) template repo to begin your Kakarot journey w/ Foundry.
+
+### Setup
+
+You can declare a alias in `foundry.toml`:
+```
+[profile.default]
+src = "src"
+out = "out"
+libs = ["lib"]
+evm_version = 'cancun' # Kakarot supports `PUSH0`, `TLOAD` / `TSTORE`...
+
+[rpc_endpoints]
+kakarot_starknet_sepolia = "https://sepolia-rpc.kakarot.org"
+```
+
+### Fork Testing
+
+```shell
+$ forge test --fork-url "https://sepolia-rpc.kakarot.org"
+# or $ forge test --fork-url kakarot_starknet_sepolia
+```
+
+### Config Setting
+
+```
+[rpc_endpoints]
+kakarot_starknet_sepolia = "https://sepolia-rpc.kakarot.org"
+
+[etherscan]
+kakarot_starknet_sepolia = { key = "kakarot_starknet_sepolia", chain = 920637907288165, url = "https://api.routescan.io/v2/network/testnet/evm/920637907288165/etherscan" }
+
+```
+
+### Deployment
+
+You can use the deploy script to deploy contract:
+
+```shell
+$ forge script ./script/Deploy.s.sol --broadcast --rpc-url "https://sepolia-rpc.kakarot.org"
+# or $ forge script ./script/Deploy.s.sol --broadcast --rpc-url kakarot_starknet_sepolia
+```
+
+or directly use the [forge command](https://book.getfoundry.sh/reference/forge/forge-create):
+```shell
+$ forge create <path-to-contract>:<contract-name> --rpc-url "https://sepolia-rpc.kakarot.org" --private-key <your_private_key>
+# or $ forge create <path-to-contract>:<contract-name> --rpc-url kakarot_starknet_sepolia --private-key <your_private_key>
+```
+
+### Verify
+
+Please make sure your optimizer, solidity version, contract path and address are all correct.
+
+Use the [forge command](https://book.getfoundry.sh/reference/forge/forge-verify-contract) to verify your contract:
+
+```
+$ forge verify-contract <your_contract_address> <path-to-contract>:<contract-name> \
+--verifier-url 'https://api.routescan.io/v2/network/testnet/evm/920637907288165/etherscan' \
+--etherscan-api-key "kakarot_starknet_sepolia" \
+--num-of-optimizations 200 \
+--compiler-version "v0.8.26+commit.8a97fa7a"
+```