Events Tracking / Tendermint v0.32.0 Update

[alexanderbez]

Refactor the SDK to use the ABCI events semantics:

• Move x/{module}/tags/tags.go => x/{module}/types/events.go
• Update docs/specs to reflect all new event types
• Refactor tags in favor of new Event(s) type(s)
• Update Context to use new EventManager
• (Begin|End)Blocker no longer return tags, but rather uses new EventManager
• Message handlers no longer return tags, but rather uses new EventManager

Any component (e.g. BeginBlocker, message handler, etc...) wishing to emit an event must do so
through ctx.EventManger().EmitEvent(s).

To reset or wipe emitted events: ctx = ctx.WithEventManager(sdk.NewEventManager())
To get all emitted events: events := ctx.EventManager().Events()

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To perform the minimal review, simply review each spec's xx_events.md file as the structural code changes are trivial (but verbose).

closes: #4387

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• Targeted PR against correct branch (see CONTRIBUTING.md)

• Linked to github-issue with discussion and accepted design OR link to spec that describes this work.

• Wrote tests

• Updated relevant documentation (docs/)

• Added a relevant changelog entry: clog add [section] [stanza] [message]

• rereviewed Files changed in the github PR explorer

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For Admin Use:

• Added appropriate labels to PR (ex. wip, ready-for-review, docs)
• Reviewers Assigned
• Squashed all commits, uses message "Merge pull request #XYZ: [title]" (coding standards)

[fedekunze]

ACK

[rigelrozanski]

👏 👏 👏 stoked - few changes I'll just push the typo upgrades

[rigelrozanski]

Emit a bit confusing here although it makes sense... Does AddEvents not make sense?