DataDog/dd-sdk-android 3.1.0 on GitHub

[FEATURE] RUM: Feature Operations public API. See #2814
[FEATURE] RUM: Feature Operations DTO schema integration. See #2816
[FEATURE] RUM: Feature Operations user debug logs support. See #2819
[FEATURE] RUM: Feature Operations usage telemetry support. See #2818
[FEATURE] RUM: Feature Operations parameters validation support. See #2835
[FEATURE] RUM: Feature Operations background processing support. See #2887
[FEATURE] RUM: Feature Operations synthetics attribute support. See #2888
[IMPROVEMENT] RUM: Feature Operations Fix RumVitalEvent serialization logic. See #2828
[IMPROVEMENT] Refactor the vitals screen in the sample application. See #2820
[IMPROVEMENT] Add feature operation block to the VitalsFragment. See #2821
[IMPROVEMENT] RUM: Replace RumVitalEvent with VitalEvent. See #2831
[IMPROVEMENT] RUM: Fix the feature context in the telemetry. See #2857
[IMPROVEMENT] Use single source of truth for os and device properties definitions for Logs and Traces. See #2859
[IMPROVEMENT] Safe serialization of account.extraInfo. See #2862
[IMPROVEMENT] Update MIGRATION.MD. See #2858
[IMPROVEMENT] Fix for VitalEvent date. See #2875
[IMPROVEMENT] Make AndroidMDrawableToColorMapper and AndroidQDrawableToColorMapper internal. See #2873
[IMPROVEMENT] Trace: Add @JvmStatic to kotlin objects for cleaner interop with Java language. See #2876
[IMPROVEMENT] RUM: Check for result of activity.intent. See #2877
[IMPROVEMENT] Add documentation to the public API members where missing. See #2880
[MAINTENANCE] Change the order of executors shutdown in drainAndShutdownExecutors to fix flaky integration tests. See #2884
[MAINTENANCE] Bump dd-trace-java version to 1.53.0. See #2860
[MAINTENANCE] Split detekt custom rules to handle code point limit. See #2863
[MAINTENANCE] Update Node version. See #2864
[MAINTENANCE] Fix link to CONTRIBUTING doc from PR template. See #2869
[MAINTENANCE] Update CONTRIBUTING doc with new modules. See #2870
[MAINTENANCE] Bump language and API versions to 1.8. See #2865