This commit fixes a bug where a View would be registered as it's own
parent in the accessibility hierarchy leading to stack overflows in the
Android accessibility service. The issue affected up-to-date Android 13
systems and potentially older systems with updated accessibility
services.

- Created a new detail namespace
- Moved shared module implementation details into the detail namespace
- Split dependencies so source files only rely on details in the detail namespace
- Removed all code from the juce_gui_basics.cpp file

Previously, when navigating in a text editor by words, the cursor would
get 'stuck' after moving a single word. This issue should now be
resolved.

Additionally, the cursor position was not updated properly when
adjusting a selection, and would instead be moved to the end of the
selected range. With this patch applied, the cursor should now be set to
the correct position when modifying selections. When extending a
selection backwards, the cursor will display at the beginning of the
selected range, rather than the end.

Finally, most Android apps announce the 'skipped' characters or words
whenever the cursor is moved, but this feature was broken in JUCE. This
patch enables this feature.

These crashes could be seen in the DemoRunner when selecting items in
nested PopupMenu windows.

Previously, when navigating in a text editor by words, the cursor would
get 'stuck' after moving a single word. This issue should now be
resolved.

Additionally, the cursor position was not updated properly when
adjusting a selection, and would instead be moved to the end of the
selected range. With this patch applied, the cursor should now be set to
the correct position when modifying selections. When extending a
selection backwards, the cursor will display at the beginning of the
selected range, rather than the end.

Finally, most Android apps announce the 'skipped' characters or words
whenever the cursor is moved, but this feature was broken in JUCE. This
patch enables this feature.

These crashes could be seen in the DemoRunner when selecting items in
nested PopupMenu windows.

Calling AccessibilityHandler::getChildren() or getParent() may cause an AccessibilityHandler object to be created and an InternalAccessibilityEvent::elementCreated notification to be sent. Calling AndroidAccessibilityEvent.setSource may then cause a recursive populateNodeInfo() call.