add altitude + camera spec component and calc tile size by this

also restrict detections to be no bigger than in classes.json

Azaion.Common/Controls/NumericUpDown.xaml

@@ -0,0 +1,47 @@
+<UserControl x:Class="Azaion.Common.Controls.NumericUpDown"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:local="clr-namespace:Azaion.Common.Controls"
+             mc:Ignorable="d"
+             d:DesignHeight="300" d:DesignWidth="300">
+    <Grid Background="DimGray">
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="*" />
+            <ColumnDefinition Width="24" />
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="12" />
+            <RowDefinition Height="12" />
+        </Grid.RowDefinitions>
+        <TextBox Name="NudTextBox"
+                 Background="DimGray"
+                 Grid.Column="0"
+                 Grid.Row="0"
+                 Grid.RowSpan="2"
+                 TextAlignment="Right"
+                 VerticalAlignment="Center"
+                 VerticalContentAlignment="Center"
+                 Text="{Binding Value, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, RelativeSource={RelativeSource AncestorType={x:Type local:NumericUpDown}}}"
+                 TextChanged="NUDTextBox_OnTextChanged"/>
+        <RepeatButton
+            Name="NudButtonUp"
+            Grid.Column="1"
+            Grid.Row="0"
+            FontSize="10"
+            VerticalAlignment="Center"
+            HorizontalContentAlignment="Center"
+            Click="NudButtonUp_OnClick"
+            >^</RepeatButton>
+        <RepeatButton
+            Name="NudButtonDown"
+            Grid.Column="1"
+            Grid.Row="1"
+            FontSize="10"
+            VerticalAlignment="Center"
+            HorizontalContentAlignment="Center"
+            Click="NudButtonDown_OnClick"
+        >˅</RepeatButton>
+    </Grid>
+</UserControl>