Support launchdarkly-js-client-sdk >v3

[kdawgwilk]

package requirements won't let me install latest LD SDK version

> npm i             
npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: [email protected]
npm ERR! Found: [email protected]
npm ERR! node_modules/launchdarkly-js-client-sdk
npm ERR!   launchdarkly-js-client-sdk@"^3.1.3" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer launchdarkly-js-client-sdk@"^2.23.0" from [email protected]
npm ERR! node_modules/vue-ld
npm ERR!   vue-ld@"^0.4.0" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.
npm ERR! 
npm ERR! See /Users/kwilk/.npm/eresolve-report.txt for a full report.

https://docs.launchdarkly.com/sdk/client-side/javascript/migration-2-to-3