chore: moving internal StreamingProcessor class from js-sdk-common to js-server-sdk-common#699

tanderson-ld wants to merge 2 commits intomainlaunchdarkly/js-core:mainfrom

ta/sdk-156/move-streamingprocessor-out-of-commonlaunchdarkly/js-core:ta/sdk-156/move-streamingprocessor-out-of-commonCopy head branch name to clipboard