Reorganize the app file tree for clarity

[meenbeese]

I have only recently gotten used to the file tree of Orbot, and even then, sometimes the location of files throws me off. Some of the nesting seems weird, and unrelated files are in the root directory. I don't think the app structure was ever organized to make sense, but as new features were added, new files were just tucked into existing directories.

This PR aims to make the file tree clearer by organizing files into logical groups, such as more, kindness, and connection.
It obviously takes some time to get used to, but navigating it has become much easier in my experience.

I didn't change all of the directories or touch other packages other than app.
There is probably room for improvement, and I am open to feedback if I have made an unintuitive change.

The new file tree looks like this:

C:.
│   OrbotActivity.kt
│   OrbotApp.kt
│
├───circumvention
│       BuiltInBridgesResponse.kt
│       CircumventionApi.kt
│       MeekAuthenticator.kt
│       SettingsRequest.kt
│       SettingsResponse.kt
│
├───connection
│       ConfigConnectionBottomSheet.kt
│       ConnectFragment.kt
│       ConnectionHelperCallbacks.kt
│       CustomBridgeBottomSheet.kt
│       ExitNodeDialogFragment.kt
│       MoatBottomSheet.kt
│
├───kindness
│       KindessConfigBottomSheet.kt
│       KindnessFragment.kt
│
├───more
│       AboutDialogFragment.kt
│       MoreActionAdapter.kt
│       MoreFragment.kt
│
├───onboarding
│       CustomBridgesActivity.java
│       ProxiedHurlStack.kt
│
├───ui
│       AppManagerActivity.kt
│       LogBottomSheet.kt
│       OrbotBottomSheetDIalogFragment.kt
│       OrbotMenuAction.kt
│       OrbotMenuActionAdapter.kt
│       OrbotTileService.kt
│
└───v3onionservice
    │   OnionServiceActionsDialogFragment.java
    │   OnionServiceActivity.java
    │   OnionServiceContentProvider.java
    │   OnionServiceCreateDialogFragment.java
    │   OnionServiceDatabase.java
    │   OnionServiceDeleteDialogFragment.kt
    │   OnionV3ListAdapter.java
    │   PermissionManager.kt
    │   V3BackupUtils.java
    │   ZipUtilities.java
    │
    └───clientauth
            ClientAuthActionsDialogFragment.java
            ClientAuthActivity.java
            ClientAuthBackupDialogFragment.java
            ClientAuthContentProvider.java
            ClientAuthCreateDialogFragment.java
            ClientAuthDatabase.java
            ClientAuthDeleteDialogFragment.java
            ClientAuthListAdapter.java

or graphically like this: