Use a Workflow Status Thread Rather than Short Requeue

[jonathan-innis]

• Rather than short requeueing on the applicationgroup_controller, we can react to events that occur on the Workflow
• This will stop us having unnecessary reconciles and we will only react to changes in the workflow phase

[codecov-commenter]

Codecov Report

Merging #382 (7a6e73b) into main (e22ff10) will increase coverage by 0.16%. The diff coverage is 69.32%.

@@            Coverage Diff             @@
##             main     #382      +/-   ##
==========================================
+ Coverage   67.14%   67.30%   +0.16%     
==========================================
  Files           8        9       +1     
  Lines         350      468     +118     
==========================================
+ Hits          235      315      +80     
- Misses        106      136      +30     
- Partials        9       17       +8     

Impacted Files	Coverage Δ
controllers/appgroup_controller.go	77.19% <57.14%> (+3.95%)	:arrow_up:
controllers/workflow_status_controller.go	67.18% <67.18%> (ø)
pkg/graph/graph.go	94.11% <90.47%> (-1.81%)	:arrow_down:

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