feat(insights): add insights tab to repo view

[wass3r]

adds a new page/tab at the repo-level called insights. it's sort of a continuation of a hackathon effort from a few years ago (hackathon/insights). the page provides repo-level metrics over the last seven days (hard coded). it does so by querying for all builds over the time span and doing client-side calculations. the metrics cover build activity, build duration, reliability, and queue time.

Important

this implementation is not final, but more-so serves as a preview and/or discussion on what this could look like while being a deploy-able deliverable. probably, in its final form, the data should be generated/stored on the backend/database with dedicated endpoints that provide the calculated data.

high-level changes:

• add "tryAll" endpoint for builds and add support for after parameter
• add insights page
• add barchart component (uses elm-visualization)
• add helpers for calculating metrics
• add cypress/elm tests (refactored one as well)

metrics provided:

• build activity (per day, avg builds per day, avg deployments per day)
• build duration (avg per day, average/std dev/median over time, time used on failed builds)
• build reliability (avg success rate per day, success/failure rate over time span, avg time to recovery from failure)
• queue performance (avg time in queue per day, average/median over time span)

the following are some examples based on fake build data:

insights_interactivity.mp4

Tip

Reminder for reviewers: changes in Main.elm, Main/Pages/Model.elm, Main/Pages/Msg.elm, Route/Path.elm are auto-generated.

opportunities beyond this PR:

• select timeframe - 7/30/90 day (for example)
• filter by branch/event (and others?)
• plenty more (you tell me...)

[wass3rw3rk]

@plyr4 addressed the feedback! thanks for taking a look.

[KellyMerrick]

lgtm