Add Linea Sepolia Testnet verify plugin

[jac0x]

Using Contract Verification - Etherscan plugin, I can verify contracts directly from Remix.

Linea Goerli is deprecated since this June. Please update and add Linea Sepolia.

rpc url: "https://rpc.sepolia.linea.build/", chainId: 59141,

Lineascan apiURL: "https://api-sepolia.lineascan.build/api", browserURL: "https://sepolia.lineascan.build/",

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