chore(simulator): harmonize log messages across codebase (#1813)

chore(simulator): harmonize log messages across codebase (#1813)

* chore(simulator): add moduleName prefix to ChargingStation log messages

* fix(simulator): downgrade unknown incoming OCPP command log to warn level

* chore(simulator): harmonize remaining log messages across codebase

* chore(simulator): harmonize state and lifecycle log message wording

* fix(simulator): use event handler names instead of constructor in log prefixes

* fix(simulator): correct grammar errors in log messages

* fix(simulator): correct 'non existing' to 'non-existent' in log messages