help me write an erc20 contract with a fixed issue of 1,000,000 tokens, half (500,000) of which will belong to the creator of the contract, and the rest can be bought at a price of 0.0012 ETH for one token, always until they are all sold . Something like a stable coin. Ethers must be sent to the contract itself, and the creator can transfer them to another ethereum account at any time.