Fix implicitly deleted move constructors (#1954)

These were incorrect and exhibited as warnings on more recent versions of
clang (notably on Mac).

- Use pointers instead of references internally in GenericHID and *Drive
- Leave PIDBase, PIDController, and Resource non-moveable
- Remove the atomic from m_disabled in NidecBrushless
- Make Timer and Trigger copyable as well as moveable
- Implement custom move constructor/assignment for SendableChooserBase

Also comment out some unused variables that caused clang warnings.

wpilibc/src/main/native/cpp/smartdashboard/SendableChooserBase.cpp

@@ -16,3 +16,22 @@ std::atomic_int SendableChooserBase::s_instances{0};
 SendableChooserBase::SendableChooserBase() : m_instance{s_instances++} {
   SendableRegistry::GetInstance().Add(this, "SendableChooser", m_instance);
 }
+
+SendableChooserBase::SendableChooserBase(SendableChooserBase&& oth)
+    : SendableHelper(std::move(oth)),
+      m_defaultChoice(std::move(oth.m_defaultChoice)),
+      m_selected(std::move(oth.m_selected)),
+      m_haveSelected(std::move(oth.m_haveSelected)),
+      m_activeEntries(std::move(oth.m_activeEntries)),
+      m_instance(std::move(oth.m_instance)) {}
+
+SendableChooserBase& SendableChooserBase::operator=(SendableChooserBase&& oth) {
+  SendableHelper::operator=(oth);
+  std::scoped_lock lock(m_mutex, oth.m_mutex);
+  m_defaultChoice = std::move(oth.m_defaultChoice);
+  m_selected = std::move(oth.m_selected);
+  m_haveSelected = std::move(oth.m_haveSelected);
+  m_activeEntries = std::move(oth.m_activeEntries);
+  m_instance = std::move(oth.m_instance);
+  return *this;
+}