Show planned market changes on charts

[pennyandrews]

Story

As a console user When I am doing my analysis I want to know when an approved market update is planned to take place So that I have visibility of what's happening with the market, when, and can assess how it might effect my trading decisions

Acceptance Criteria

• [ ] I can see on the chart any approved market updates planned to take place during the time period I am viewing
• [ ] When I zoom out in the chart to see a longer time period I can see all approved market updates planned to take place during the time period I am viewing
• [ ] When I zoom out in the chart to see a longer time period, I can see all enacted market updates that have already taken place during the time period I am viewing
• [ ] There is a way to get to the details of the approved market update (in the governance dapp)

Question that need to be answered...

• How we visually represent the update in the context of time as we don't know how long it would actually take (would it be instant?) and would need it to stand out visually on the chart regardless of what time period you were viewing so that it gets noticed

Tasks

• [ ] Finalise UX and copy
• [ ] Visual design
• [ ] Implement
• [ ] QA test (Verify meets acceptance criteria, exploratory testing for bugs, check adherence to visual design, add automated regression tests for the A/Cs)
• [ ] Release

Sketch

Additional details / background info

This ticket is similar in nature to one about showing planned network upgrade proposals on charts

[mattrussell36]

@johnwalley thers another ticket somewhat similar to this which is about showing network upgrades on charts. Additionally we might want to show auction periods on charts.

Perhaps we need a more generic ticket for pennant to allow for showing a shaded 'Region' aea in the chart, both for the x axis and the y axis?