[CHIA-773] Swap out Payment for CreateCoin

[Quexington]

These two types are essentially aliases for each other. Payment was earlier but when CreateCoin was made as part of the chia.wallet.conditions PR, it was decided just to duplicate Payment for simplicity. This PR removes that duplication in favor of the newer, more paradigmatic type.

[coveralls-official]

Pull Request Test Coverage Report for Build 12895445105

Details

• 78 of 78 (100.0%) changed or added relevant lines in 21 files are covered.
• 23 unchanged lines in 7 files lost coverage.
• Overall coverage increased (+0.004%) to 91.518%

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Files with Coverage Reduction	New Missed Lines	%
chia/wallet/util/wallet_sync_utils.py	1	86.14%
chia/wallet/puzzles/puzzle_utils.py	1	76.19%
chia/server/node_discovery.py	2	81.5%
chia/consensus/blockchain.py	2	94.14%
chia/timelord/timelord_launcher.py	2	89.29%
chia/wallet/wallet_node.py	4	88.03%
chia/timelord/timelord.py	11	78.52%

Totals
Change from base Build 12894248841:	0.004%
Covered Lines:	105287
Relevant Lines:	114869

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💛 - Coveralls