Some samples aren't found in API docs #129956
Description
I wrote a horribly inefficient script to find all samples that aren't mentioned in /packages.
font_feature.font_feature_lining_figures.0.dart
font_feature.font_feature_historical_forms.0.dart
font_feature.font_feature_contextual_alternates.0.dart
font_feature.font_feature_fractions.0.dart
font_feature.font_feature_oldstyle_figures.0.dart
font_feature.font_feature_alternative.0.dart
font_feature.font_feature_proportional_figures.0.dart
font_feature.font_feature_locale_aware.0.dart
font_feature.font_feature_subscripts.0.dart
font_feature.font_feature_notational_forms.0.dart
font_feature.font_feature_slashed_zero.0.dart
font_feature.font_feature_stylistic_alternates.0.dart
font_feature.font_feature_swash.0.dart
font_feature.font_feature_scientific_inferiors.0.dart
font_feature.0.dart
font_feature.font_feature_superscripts.0.dart
font_feature.font_feature_denominator.0.dart
font_feature.font_feature_case_sensitive_forms.0.dart
font_feature.font_feature_alternative_fractions.0.dart
font_feature.font_feature_stylistic_set.0.dart
font_feature.font_feature_ordinal_forms.0.dart
font_feature.font_feature_historical_ligatures.0.dart
font_feature.font_feature_tabular_figures.0.dart
font_feature.font_feature_character_variant.0.dart
font_feature.font_feature_numerators.0.dart
font_feature.font_feature_stylistic_set.1.dart
linear_border.0.dart
action_icon_theme.0.dart
text_field.2.dart
search_anchor.4.dart
search_anchor.3.dart
switch.3.dart
snack_bar.2.dart
scaffold_state.show_snack_bar.0.dart
overflowbox.0.dart
These should be added to relevant API docs, e.g.
/// {@tool dartpad}
/// This example shows how to detect if the user has selected the logical "Q"
/// key and handle the key if they have.
///
/// ** See code in examples/api/lib/services/keyboard_key/logical_keyboard_key.0.dart **
/// {@end-tool}