LeMUR context

[smithakolan]

context should be able to handle type String as a input instead of LemurBaseParamsContext.

Current functionality:

var response = client.lemur().summary(LemurSummaryParams.builder()
                .transcriptIds(List.of(transcript.getId()))
                .context(LemurBaseParamsContext.of("A GitLab meeting to discuss logistic"))
                .answerFormat("TLDR").build());

[dsinghvi]

@smithakolan let us know how high priority this request is -- we'll add to our Q1 roadmap depending on the urgency!

[smithakolan]

Would rank this as a medium priority. Just for context, this is the first example users see on our LeMUR specialized endpoints page so I would like it to be succinct.

[Swimburger]

The type name could be better here too. LemurContext instead of LemurBaseParamsContext.