Add gdb print methods support same as pytorch-lldb (#140935)

`pytorch-lldb` support pretty printing size and key_set of tensor via #97101

Add same pretty printing for gdb debugging.

**Test Result**

```bash
$ gdb python
(gdb) break at::native::negative
(gdb) r
>>> import torch
>>> t = torch.tensor([1, 2, 3, 4], dtype=torch.float64)
>>> t.negative()
Thread 1 "python" hit Breakpoint 1, at::native::negative (self=...) at /home/zong/code/pytorch/aten/src/ATen/native/UnaryOps.cpp:854
854	Tensor negative(const Tensor& self) { return self.neg(); }
```

**Before**
```bash
(gdb) p self.key_set()
$2 = {repr_ = 1271310352385}

(gdb) p self.sizes()
$3 = {Data = 0x9cb488, Length = 1}

```

**After**
```bash
(gdb) torch-int-array-ref-repr self.sizes()
[4]
(gdb) torch-dispatch-keyset-repr self.key_set()
DispatchKeySet(CPU, ADInplaceOrView, AutogradCPU, AutocastCPU)
```

```bash
$ lintrunner
```
![image](https://github.com/user-attachments/assets/b720e284-13b1-4581-ae3a-963f6482fdb2)

Pull Request resolved: https://github.com/pytorch/pytorch/pull/140935
Approved by: https://github.com/drisspg

tools/gdb/pytorch-gdb.py

@@ -55,4 +55,53 @@ class TensorRepr(gdb.Command):  # type: ignore[misc, no-any-unimported]
             gdb.parse_and_eval(f"(void)free({int(res)})")
 
 
+class IntArrayRefRepr(gdb.Command):  # type: ignore[misc, no-any-unimported]
+    """
+    Print human readable representation of c10::IntArrayRef
+    """
+
+    def __init__(self) -> None:
+        gdb.Command.__init__(
+            self, "torch-int-array-ref-repr", gdb.COMMAND_USER, gdb.COMPLETE_EXPRESSION
+        )
+
+    def invoke(self, args: str, from_tty: bool) -> None:
+        args = gdb.string_to_argv(args)
+        if len(args) != 1:
+            print("Usage: torch-int-array-ref-repr EXP")
+            return
+        name = args[0]
+        with DisableBreakpoints():
+            res = gdb.parse_and_eval(f"torch::gdb::int_array_ref_string({name})")
+            res = str(res)
+            print(res[res.find('"') + 1 : -1])
+
+
+class DispatchKeysetRepr(gdb.Command):  # type: ignore[misc, no-any-unimported]
+    """
+    Print human readable representation of c10::DispatchKeyset
+    """
+
+    def __init__(self) -> None:
+        gdb.Command.__init__(
+            self,
+            "torch-dispatch-keyset-repr",
+            gdb.COMMAND_USER,
+            gdb.COMPLETE_EXPRESSION,
+        )
+
+    def invoke(self, args: str, from_tty: bool) -> None:
+        args = gdb.string_to_argv(args)
+        if len(args) != 1:
+            print("Usage: torch-dispatch-keyset-repr EXP")
+            return
+        keyset = args[0]
+        with DisableBreakpoints():
+            res = gdb.parse_and_eval(f"torch::gdb::dispatch_keyset_string({keyset})")
+            res = str(res)
+            print(res[res.find('"') + 1 : -1])
+
+
 TensorRepr()
+IntArrayRefRepr()
+DispatchKeysetRepr()