[pkg/ottl] add ValueExpression
to support extraction of values from the signal context
#36883
+224
−2
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Description
This PR adds a new
ParseValueExpression
method to the OTTL parser which allows users of this package to extract data from the context using OTTLLink to tracking issue
Fixes #35621
Testing
Added unit and e2e tests - currently working on adding some more test cases
Documentation
Added godoc comments for the added methods and types