feat: add gdformat formatter for godot/gdscript (#342)

Add
[gdformat](https://github.com/Scony/godot-gdscript-toolkit?tab=readme-ov-file#formatting-with-gdformat-more)
for godot gdscript files

See
- https://godotengine.org/
-
https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_basics.html
- https://github.com/Scony/godot-gdscript-toolkit

---------

Co-authored-by: Radon Rosborough <radon@intuitiveexplanations.com>

3 files changed, 26 insertions, 0 deletions

diff --git a/test/formatters/installers/gdformat.bash b/test/formatters/installers/gdformat.bash
new file mode 100644
index 0000000..4ecfae1
--- /dev/null
+++ b/test/formatters/installers/gdformat.bash
@@ -0,0 +1,2 @@
+apt-get install -y python3-pip
+pip3 install "gdtoolkit==4.*"
diff --git a/test/formatters/samplecode/gdformat/in.gd b/test/formatters/samplecode/gdformat/in.gd
new file mode 100644
index 0000000..9e30e3d
--- /dev/null
+++ b/test/formatters/samplecode/gdformat/in.gd
@@ -0,0 +1,9 @@
+class X:
+	var x=[1,2,{'a':1}]
+	var y=[1,2,3,]     # trailing comma
+	func foo(a:int,b,c=[1,2,3]):
+		if a in c and \
+		   b > 100:
+			print('foo')
+func bar():
+	print('bar')
diff --git a/test/formatters/samplecode/gdformat/out.gd b/test/formatters/samplecode/gdformat/out.gd
new file mode 100644
index 0000000..bede6f6
--- /dev/null
+++ b/test/formatters/samplecode/gdformat/out.gd
@@ -0,0 +1,15 @@
+class X:
+	var x = [1, 2, {"a": 1}]
+	var y = [
+		1,
+		2,
+		3,
+	]  # trailing comma
+
+	func foo(a: int, b, c = [1, 2, 3]):
+		if a in c and b > 100:
+			print("foo")
+
+
+func bar():
+	print("bar")