Support script global resource name in EditorFileSystem

* Works for binary and text files.
* Makes EditorQuickOpen work with custom resources again.
* Information is cached and easily accessible.

Properly fixes #66179. Supersedes #66215 and supersedes #62417

**WARNING**: This required breaking backwards binary compatibility (.res and .scn files). Files saved after this PR is merged will no longer open in any earlier versions of Godot.

4 files changed, 11 insertions, 0 deletions

diff --git a/modules/gdscript/gdscript.cpp b/modules/gdscript/gdscript.cpp
index 28f478e9cd..1d13ecfdb1 100644
--- a/modules/gdscript/gdscript.cpp
+++ b/modules/gdscript/gdscript.cpp
@@ -248,6 +248,10 @@ Ref<Script> GDScript::get_base_script() const {
 	}
 }
 
+StringName GDScript::get_global_name() const {
+	return name;
+}
+
 StringName GDScript::get_instance_base_type() const {
 	if (native.is_valid()) {
 		return native->get_name();
diff --git a/modules/gdscript/gdscript.h b/modules/gdscript/gdscript.h
index a53785a98d..436b44af4e 100644
--- a/modules/gdscript/gdscript.h
+++ b/modules/gdscript/gdscript.h
@@ -228,6 +228,7 @@ public:
 	virtual bool can_instantiate() const override;
 
 	virtual Ref<Script> get_base_script() const override;
+	virtual StringName get_global_name() const override;
 
 	virtual StringName get_instance_base_type() const override; // this may not work in all scripts, will return empty if so
 	virtual ScriptInstance *instance_create(Object *p_this) override;
diff --git a/modules/mono/csharp_script.cpp b/modules/mono/csharp_script.cpp
index 7606465b8a..ca94917938 100644
--- a/modules/mono/csharp_script.cpp
+++ b/modules/mono/csharp_script.cpp
@@ -2606,6 +2606,10 @@ Ref<Script> CSharpScript::get_base_script() const {
 	return base_script;
 }
 
+StringName CSharpScript::get_global_name() const {
+	return StringName();
+}
+
 void CSharpScript::get_script_property_list(List<PropertyInfo> *r_list) const {
 #ifdef TOOLS_ENABLED
 	const CSharpScript *top = this;
diff --git a/modules/mono/csharp_script.h b/modules/mono/csharp_script.h
index ef381fd76a..6021555255 100644
--- a/modules/mono/csharp_script.h
+++ b/modules/mono/csharp_script.h
@@ -186,6 +186,8 @@ public:
 	bool inherits_script(const Ref<Script> &p_script) const override;
 
 	Ref<Script> get_base_script() const override;
+	StringName get_global_name() const override;
+
 	ScriptLanguage *get_language() const override;
 
 	void get_script_method_list(List<MethodInfo> *p_list) const override;