refactor: make workflow details generic so it can be used for tasks

[schottra]

flyteorg/flyte#459

Tasks/Workflows have a lot of similar information. The details view only really differs in whether or not we want to show schedules and what filter we need to use to fetch the executions.
So as a preparatory step for showing task details, this change moves all of the WorkflowDetails logic into a shared set of Entity components. Rendering the details for an entity only requires passing a ResourceIdentifier. The individual view components will be responsible for pulling the correct values from the route and rendering a EntityDetails component using the right resourceType value.

Note While the work has been done to enable showing Task details, it isn't hooked up yet. That will be in a follow-up PR.

• Added components/Entities folder to hold components which are common across entity types (workflow, launch plan, task, etc..)
• Moved the components in WorkflowDetails into the new components folder
• Made EntityDetails components generic based on a passed ResourceIdentifier
  • Sections in the view are conditionally shown based on a set of flag constants which are mapped for each resourceType. The default view is just to show the description of the entity. Workflows will show everything. Tasks will show everything except schedules.
• Created maps for string constants and executions filters based on resource type.

[codecov-commenter]

Codecov Report

Merging #96 into single-task-execution will increase coverage by 0.04%.
The diff coverage is 55.55%.

@@                    Coverage Diff                    @@
##           single-task-execution      #96      +/-   ##
=========================================================
+ Coverage                  67.50%   67.54%   +0.04%     
=========================================================
  Files                        371      372       +1     
  Lines                       5992     6021      +29     
  Branches                     932      945      +13     
=========================================================
+ Hits                        4045     4067      +22     
- Misses                      1947     1954       +7     

Impacted Files	Coverage Δ
src/components/Task/TaskDetails.tsx	0.00% <0.00%> (ø)
src/models/Common/types.ts	100.00% <ø> (ø)
src/components/Entities/EntityDetailsHeader.tsx	57.14% <28.57%> (ø)
src/components/Entities/EntityDetails.tsx	48.27% <48.27%> (ø)
src/components/Entities/EntityDescription.tsx	57.14% <50.00%> (ø)
src/components/Entities/EntityExecutions.tsx	63.63% <54.54%> (ø)
...rc/components/Entities/executionFilterGenerator.ts	60.00% <60.00%> (ø)
src/components/Workflow/WorkflowDetails.tsx	60.00% <60.00%> (ø)
src/components/Entities/EntitySchedules.tsx	100.00% <100.00%> (ø)
src/components/Entities/constants.ts	100.00% <100.00%> (ø)
... and 6 more

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[podehnal]

👍