Add Application Insights to the bot

[Anheledir]

For our bot, some useful statistics that we could monitor include:

• Message volume: Track the number of messages sent and received by the bot, as well as any errors or exceptions that occur when processing messages.

• User engagement: Track the number of active users, the frequency of user interactions, and other engagement metrics to understand how users are interacting with the bot.

• Performance metrics: Monitor server response times, latency, and other performance metrics to ensure that the bot is responding quickly and efficiently to user requests.

• Error and exception tracking: Log any errors or exceptions that occur in our bot's code, along with contextual data such as the user and server that triggered the error.

By using Application Insights to monitor these metrics, we can gain valuable insights into how users are interacting with our bot, identify performance bottlenecks and errors, and optimize the bot's behavior for the best user experience.

We should utilize the Serilog.Sinks.ApplicationInsights to send log messages automatically to Application Insights, too.

[Anheledir]

That's more complex than originally estimated.