* feat: enables prometheus rules and alerts which can be sent to alertmanager
* chore: adding configs for alertmanager, alert, and prom
* chore: alerts WIP
* chore: alerts WIP
* chore: alerts WIP
* chore: setRules API will update rules
* chore: initialization of prometheus related stuff moved to separate function
* chore: alerts WIP
* chore: alerts WIP
* fix: r.promConfig was nil
* feat: routing alertmanager apis to alertmanager service at nginx
* chore: not writing to localDB if string parsing gives error
* feat: list alerts API
* chore: error in creating multiple groups
* feat: CRUD APIs for rules working
* chore: changed prometheus version
* chore: updated AlertingRuleResponse struct's Id json value
* chore: updated prometheus's version
* chore: will load rules from database on bootup
* feat: crud APIs for notification channels WIP
* fix: changed ALERTMANAGER_API_PREFIX
* chore: enabling scrape and notify discover manager
* chore: fixing path for signoz.db
* chore: used transactions for rules APIs
* chore: editchannel API updated and other apis refactored
* chore: fixed merge conflicts
* chore: changing createChannel api from yaml to json reader
* chore: changing editChannel api from yaml to json reader
* chore: porting loadChannels to json format
* chore: editRule returning rule not found
* chore: pre-release
* chore: fixed db path for persistence
* release: v0.5.0
