feat: workflow template (#28553)

* wip: confirm before existing and disable/enable save button condition

* fix: get correct workflow detail

* wip: add back workflow summary

* wip: add back json editor

* wip: step property badge

* wip: redesign card flow

* wip: redesign card flow

* redesign workflow summary

* wworkflow summary styling

* wip

* drag and drop

* list redesign

* refactor

* refactor

* remove deadcode

* refactor

* insert steps

* push down when dropped

* feat: workflow template

* simplify

* move template to manifest

* feat: hash manifest file

* fix: template column

* fix: migration

* fix: workflow lookup

* chore: clean up

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Co-authored-by: Jason Rasmussen <jason@rasm.me>