Add dag run deadlines to API and UI

[ferruzzi]

Body

When a deadline fails, it should have some indicator in the UI

Committer

• I acknowledge that I am a maintainer/committer of the Apache Airflow project.

[bbovenzi]

Here is what I am thinking:

API changes:

• Add deadline?: string to the DagRunResponse
• In list dagruns, add deadline toorder_by
• In list dagruns, add missed_deadlines filter for dagruns with a deadline but that deadline is before the last_scheduling_decision
• In list dagruns, add upcoming deadlines filter for dagruns with a deadline that is after datetime.now()
• In {dag_id}/details add deadline?: { reference: string, interval: string } to DAGDetailsResponse

UI changes:

• Dag Details tab: Show the deadline reference and interval in the table just like we do for latest dag version
• Dashboard: Add a list of upcoming deadlines under "stats" and a list of missed deadlines underneath "history"
• Dag Runs table: Add a deadline column and style it with a "deadline state" badge with an icon and color so a user can quickly see if the deadline is upcoming, missed or successful
• Dag Run view: If a run has a deadline show it in the header card with the same "deadline state" badge
• Dag Runs bar chart in DagCard, Grid view, and Dag Overview page: include some indication for dag runs which missed their deadline

[rawwar]

I'll work on API changes. I will create a sub-issue and start working on it. Unless @ferruzzi is already working on it.

[bbovenzi]

@ferruzzi are the core changes in to allow us to work on API changes yet? or should we marked this as blocked for now?

From my understanding, some of the core PRs have not been merged yet