Implementation for duration data type

[kgodey]

Problem

Users will want to store duration data in columns. We should allow them to do so and implement this type appropriately in the backend.

Proposed solution

We should support a duration type in Mathesar and allow users to use it. Postgres has a built in type for this – INTERVAL, so we'll use that.

Tasks that need to completed:

• Design for duration data type #241
• Handle INTERVAL type in the backend #430
• Implement filtering options for duration type #431
• Implement grouping options for duration type #432
• Implement display options for Duration type #433
• Frontend implementation for Duration Mathesar type #261

Additional context

Related issues and PRs:

• Mapping DB data types to Mathesar data types #269
• Controlled casting #127
• Infer column type two #135

Also see Postgres "Date/Time Types" docs.

[pavish]

I'm closing this issue since the one pending item #432 is tracked separately.