Add SourceBindings built-in alias and fix filtering commands

[pkosiec]

Description

Changes proposed in this pull request:

• Add SourceBindings alias (sb)
• Fix executing filtering for each command even if --filter is not passed
  • Filter reporting of filtered command
• Don't report invalid feature for command without provided one

Screenshots

Testing

Checkout the PR and run Botkube locally with any config.
Edit noop_reporter.go and change ReportCommand

// ReportCommand reports a new executed command. The command should be anonymized before using this method.
func (n NoopReporter) ReportCommand(plat config.CommPlatformIntegration, cmd string, org command.Origin, filtered bool) error {
	// print all input params to make sure they are passed correctly
	log.Println("ReportCommand", plat, cmd, org, filtered)
	return nil
}

Run @Botkube edit and see sb alias available.
See that there's no log like:

time="2023-02-03T08:32:05Z" level=info msg="received unsupported resource: \"get\"" component=Executor

Run a few more commands with --filter and without. See if the reported command is filtered.