Allow smaller values and increments for editor camera speed, allow custom speed values

Code/Sandbox/Editor/ViewportTitleDlg.cpp

@@ -181,7 +181,8 @@ void CViewportTitleDlg::SetupCameraDropdownMenu()
     auto comboBoxTextChanged = static_cast<void (QComboBox::*)(const QString&)>(&QComboBox::currentTextChanged);
 
     SetSpeedComboBox(cameraMoveSpeed);
-    m_cameraSpeed->setInsertPolicy(QComboBox::NoInsert);
+    m_cameraSpeed->setInsertPolicy(QComboBox::InsertAtBottom);
+    m_cameraSpeed->setDuplicatesEnabled(false);
     connect(m_cameraSpeed, comboBoxTextChanged, this, &CViewportTitleDlg::OnUpdateMoveSpeedText);
     connect(m_cameraSpeed->lineEdit(), &QLineEdit::returnPressed, this, &CViewportTitleDlg::OnSpeedComboBoxEnter);
 

Code/Sandbox/Editor/ViewportTitleDlg.h

@@ -117,11 +117,11 @@ protected:
     // Speed combobox/lineEdit settings
     double m_minSpeed = 0.01;
     double m_maxSpeed = 100.0;
-    double m_speedStep = 0.01;
+    double m_speedStep = 0.001;
     int m_numDecimals = 3;
 
     // Speed presets
-    float m_speedPresetValues[3] = { 0.1f, 1.0f, 10.0f };
+    float m_speedPresetValues[4] = { 0.01f, 0.1f, 1.0f, 10.0f };
 
     double m_fieldWidthMultiplier = 1.8;