fix: enable debug-brk on real iOS devices

[DimitarTachev]

and do not make an additional restart in the debug services.

PR Checklist

• The PR title follows our guidelines: https://github.com/NativeScript/NativeScript/blob/master/CONTRIBUTING.md#commit-messages.
• There is an issue for the bug/feature this PR is for. To avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it.
• You have signed the CLA.
• All existing tests are passing: https://github.com/NativeScript/nativescript-cli/blob/master/CONTRIBUTING.md#contribute-to-the-code-base
• Tests for the changes are included.

What is the current behavior?

Debug

• we are not able to use --debug-brk on a real iOS device

Unit testing

• tns test <platform> --debug-brk is not working without --no-watch
• tns test <platform> --debug-brk --no-watch is throwing an exception
• tns test <platform> --debug-brk is not working with multiple devices
• tns test <platform> --debug-brk is not printing the debug URL
  -- tns dev-test <platform> is throwing an exception

Common issues

• we are not able to kill the CLI with CTRL + C for 10 seconds after initial livesync.
• we are allowing simultaneously CTRL + C handlers in the livesync service.

What is the new behavior?

Debug

• we are able to use --debug-brk on a real iOS device

Unit testing

• tns test <platform> --debug-brk is working as expected
• tns dev-test <platform> is removed

Common issues

• we are able to kill the CLI with CTRL + C just after the initial livesync
• we are not allowing simultaneously CTRL + C handlers in the livesync service.

Refactoring

• the iOS devices are exposing only getDebugSocket method as we use the debug protocol for the LiveSync refresh method.
• the lldb process spawning in moved in the ios-simulator-application-manager as its an application start related logic.
• remove the IHasHasReconnected flag of the debug services as they are not restarting the application anymore.
• remove the prepareForLiveSync method as it was making a redundant attachToDebuggerPortFoundEvent call.
• remove the debugStart methods from the debug services as they were wrongly used in the unit testing.
• remove a startLookingForDevices call from the android debug service as we are ensuring this in all commands.
• remove $devicesService.initialize and $devicesService.execute calls from the debug services as we are ensuring the initialization in all commands are the debug services are always working with a single device.
• we are now starting the device log process and attaching to the DebuggerPortFound event only when we need it (when connecting to the debug socket).
• the --debug-brk logic is moved to the application managers in order to allow a single app start for the livesync and debug operations.
• the debug services are not restarting the application anymore. The code is prepared for moving this restart to a single place in the LiveSync service where we will be able to emit the DEBUGGER_DETACHED_EVENT_NAME and fix the regression from 5.1.0.

Related to: #3122, #3161