Add editor setting for default animation step

doc/classes/EditorSettings.xml

@@ -522,6 +522,10 @@
 			If [code]true[/code], display a confirmation dialog when adding a new track to an animation by pressing the "key" icon next to a property. Holding Shift will bypass the dialog.
 			If [code]false[/code], the behavior is reversed, i.e. the dialog only appears when Shift is held.
 		</member>
+		<member name="editors/animation/default_animation_step" type="float" setter="" getter="">
+			Default step used when creating a new [Animation] in the Animation bottom panel. Only affects the first animation created in the [AnimationPlayer]. By default, other newly created animations will use the step from the previous ones.
+			This value is always expressed in seconds. If you want e.g. [code]10[/code] FPS to be the default, you need to set the default step to [code]0.1[/code].
+		</member>
 		<member name="editors/animation/default_create_bezier_tracks" type="bool" setter="" getter="">
 			If [code]true[/code], create a Bezier track instead of a standard track when pressing the "key" icon next to a property. Bezier tracks provide more control over animation curves, but are more difficult to adjust quickly.
 		</member>

editor/editor_settings.cpp

@@ -55,6 +55,7 @@
 #include "scene/main/node.h"
 #include "scene/main/scene_tree.h"
 #include "scene/main/window.h"
+#include "scene/resources/animation.h"
 
 // PRIVATE METHODS
 
@@ -918,6 +919,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	EDITOR_SETTING(Variant::FLOAT, PROPERTY_HINT_RANGE, "editors/polygon_editor/auto_bake_delay", 1.5, "-1.0,10.0,0.01");
 
 	// Animation
+	EDITOR_SETTING(Variant::FLOAT, PROPERTY_HINT_RANGE, "editors/animation/default_animation_step", Animation::DEFAULT_STEP, "0.0,10.0,0.00000001");
 	EDITOR_SETTING(Variant::INT, PROPERTY_HINT_ENUM, "editors/animation/default_fps_mode", 0, "Seconds,FPS");
 	_initial_set("editors/animation/default_fps_compatibility", true);
 	_initial_set("editors/animation/autorename_animation_tracks", true);

editor/plugins/animation_player_editor_plugin.cpp

@@ -655,6 +655,8 @@ void AnimationPlayerEditor::_animation_name_edited() {
 				if (current_anim.is_valid()) {
 					new_anim->set_step(current_anim->get_step());
 				}
+			} else {
+				new_anim->set_step(EDITOR_GET("editors/animation/default_animation_step"));
 			}
 
 			String library_name;

scene/resources/animation.h

@@ -43,6 +43,7 @@ public:
 	typedef uint32_t TypeHash;
 
 	static inline String PARAMETERS_BASE_PATH = "parameters/";
+	static inline constexpr real_t DEFAULT_STEP = 1.0 / 30;
 
 	enum TrackType : uint8_t {
 		TYPE_VALUE, // Set a value in a property, can be interpolated.
@@ -280,7 +281,7 @@ private:
 	_FORCE_INLINE_ void _track_get_key_indices_in_range(const Vector<T> &p_array, double from_time, double to_time, List<int> *p_indices, bool p_is_backward) const;
 
 	double length = 1.0;
-	real_t step = 1.0 / 30;
+	real_t step = DEFAULT_STEP;
 	LoopMode loop_mode = LOOP_NONE;
 	bool capture_included = false;
 	void _check_capture_included();