EXTERN C: Add value and datatype as structs

Refactor values and datatypes s.th.

• explicit structs are used for cpplib's value and datatype classes
• get_value, get_datatype, create such structs
• other setters and getters operate on these structs

added Statustodo label

assigned to @florian

added EnhancementProposed label

added Unexpected label

changed iteration to Sprint Sep 6, 2021 - Sep 17, 2021

changed the description

added Statusdoing label and removed Statustodo label

added EnhancementAccepted label and removed EnhancementProposed label

mentioned in merge request !24 (merged)

added (- label

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set weight to 12

added P1 label

marked this issue as related to caosdb-julialib#4 (closed)

added Statustodo label and removed Statusdoing label

assigned to @timm

added Statusdoing label and removed Statustodo label

mentioned in merge request caosdb-server!34 (merged)

mentioned in merge request caosdb-cppinttest!16 (merged)

marked the checklist item explicit structs are used for cpplib's value and datatype classes as completed

marked the checklist item get_value, get_datatype, create such structs as completed

marked the checklist item other setters and getters operate on these structs as completed

added StatusReview label and removed Statusdoing label

unassigned @florian

assigned to @florian and unassigned @timm

removed StatusReview label

closed

mentioned in issue #21 (closed)