Apply naming conventions

[dzmitryhil]

• The relayer address in the XRPL and coreum should be called RelayerXRPLAddress, RelayerCoreumAddress
• The bridge address should be called BridgeXRPLAddress
• Use save action name for evidence and signatures
• Rename TicketNumber -> TicketSequence, SequenceNumber -> AccountSequence, UsedTicketsThreshold -> UsedTicketSequenceThreshold
• Use Origin word instead of Native for tokens

Description

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
• Think and try to split the PR to smaller PR if it is big.

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This change is 

[keyleu]

Reviewed 35 of 35 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @miladz68, @wojtek-coreum, and @ysv)

[wojtek-coreum]

Reviewed 35 of 35 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @miladz68 and @ysv)