LibGUI: Give some widgets a reasonable default fixed height

Instead of hard-coding 22 in random places, just make the following
widgets have a fixed height of 22 by default: Button, CheckBox,
ColorInput, ComboBox, RadioButton, SpinBox, TextBox.

In the future we can make this relative to the current font size,
but for now at least this centralizes the setting a bit better.

Libraries/LibGUI/Button.cpp

@@ -38,6 +38,7 @@ namespace GUI {
 Button::Button(String text)
     : AbstractButton(move(text))
 {
+    set_fixed_height(22);
     set_focus_policy(GUI::FocusPolicy::StrongFocus);
 }
 

Libraries/LibGUI/CheckBox.cpp

@@ -39,6 +39,7 @@ static const int s_box_height = 13;
 CheckBox::CheckBox(String text)
     : AbstractButton(move(text))
 {
+    set_fixed_height(22);
 }
 
 CheckBox::~CheckBox()

Libraries/LibGUI/ColorInput.cpp

@@ -35,6 +35,7 @@ namespace GUI {
 ColorInput::ColorInput()
     : TextEditor(TextEditor::SingleLine)
 {
+    set_fixed_height(22);
     TextEditor::on_change = [this] {
         auto parsed_color = Color::from_string(text());
         if (parsed_color.has_value())

Libraries/LibGUI/ComboBox.cpp

@@ -58,6 +58,8 @@ private:
 
 ComboBox::ComboBox()
 {
+    set_fixed_height(22);
+
     m_editor = add<ComboBoxEditor>();
     m_editor->set_frame_thickness(0);
     m_editor->on_return_pressed = [this] {

Libraries/LibGUI/FilePicker.cpp

@@ -113,7 +113,6 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, Options options, const
     toolbar.set_has_frame(false);
 
     m_location_textbox = upper_container.add<TextBox>();
-    m_location_textbox->set_fixed_height(22);
     m_location_textbox->set_text(path);
 
     m_view = vertical_container.add<MultiView>();

Libraries/LibGUI/RadioButton.cpp

@@ -36,6 +36,7 @@ namespace GUI {
 RadioButton::RadioButton(String text)
     : AbstractButton(move(text))
 {
+    set_fixed_height(22);
 }
 
 RadioButton::~RadioButton()

Libraries/LibGUI/SpinBox.cpp

@@ -32,6 +32,7 @@ namespace GUI {
 
 SpinBox::SpinBox()
 {
+    set_fixed_height(22);
     m_editor = add<TextBox>();
     m_editor->set_text("0");
     m_editor->on_change = [this] {

Libraries/LibGUI/TextBox.cpp

@@ -31,6 +31,7 @@ namespace GUI {
 TextBox::TextBox()
     : TextEditor(TextEditor::SingleLine)
 {
+    set_fixed_height(22);
 }
 
 TextBox::~TextBox()