Dicom connect routes and utils (#89)

* untested framework for load and convert

* about to test get from dicomweb

* clean up for something

* don't load dicom into mem

* fix mismatched dir paths

* trim multipart ending too

* change start strat to focus on multipart not dcm

* cleanup log and which to check for

* untested rect, ellipse, point

* forgot a stale slide res ref

* support float32 or float64

* used n instead of m

* fixed the SM series doesn't update status

* wrong indexing syntax

* one arg for logger calls

* close polygon loops

* common execution ids per annotation group item

* try to do some kind of 3d/volume coord support

* typo on y offset

* rectangles don't have radius

* rectangles don't have rotation either...

* allow for things to be computer prov

* add sgementation query fields

* set computation

* footprint in slide coords

* add 'dicom-source-url' into mark documents

* slightly more descriptive logs

* forgot to rm demo call

* dl annotations instead of dicomweb

* change annot color from orange to green

* use env var for server names

* alternate annot metadata lookup, split souces

* temp use closest if no match for annot ref

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Co-authored-by: nanli-emory <nli31@emory.edu>