Added .inl file extension to C++ language

fixes #4615

fixes #3789

run the actual ai module inside the shared process such that it cannot tamper with the main process, fixes #1000

remove electron telemetry service, move optin logic to telemetry service, introduce commonProperties.ts for *all* common properties, tests!, getting closer to #1000

move common properties that require nodejs into electronTelemetryService and out of appender, enables #1000

fixes #5996 [snippets] prefix not matching forward slashes & fixes #4485 [snippets] Allow snippets where the prefix ends with =

fixes #6100

#5962

Fixes #5649: Allow extension activation only after the main process acknowledges its receival of the ext descriptions