Code quality: Fix header guards consistency

Adds `header_guards.sh` bash script, used in CI to validate future
changes. Can be run locally to fix invalid header guards.

servers/physics/area_pair_sw.h

@@ -67,4 +67,4 @@ public:
 	~Area2PairSW();
 };
 
-#endif // AREA_PAIR__SW_H
+#endif // AREA_PAIR_SW_H

servers/physics/area_sw.h

@@ -196,4 +196,4 @@ void AreaSW::remove_area_from_query(AreaSW *p_area, uint32_t p_area_shape, uint3
 	}
 }
 
-#endif // AREA__SW_H
+#endif // AREA_SW_H

servers/physics/body_pair_sw.h

@@ -93,4 +93,4 @@ public:
 	~BodyPairSW();
 };
 
-#endif // BODY_PAIR__SW_H
+#endif // BODY_PAIR_SW_H

servers/physics/body_sw.h

@@ -486,4 +486,4 @@ public:
 	PhysicsDirectBodyStateSW() {}
 };
 
-#endif // BODY__SW_H
+#endif // BODY_SW_H

servers/physics/broad_phase_sw.h

@@ -70,4 +70,4 @@ public:
 	virtual ~BroadPhaseSW();
 };
 
-#endif // BROAD_PHASE__SW_H
+#endif // BROAD_PHASE_SW_H

servers/physics/collision_solver_sw.h

@@ -50,4 +50,4 @@ public:
 	static bool solve_distance(const ShapeSW *p_shape_A, const Transform &p_transform_A, const ShapeSW *p_shape_B, const Transform &p_transform_B, Vector3 &r_point_A, Vector3 &r_point_B, const AABB &p_concave_hint, Vector3 *r_sep_axis = nullptr);
 };
 
-#endif // COLLISION_SOLVER__SW_H
+#endif // COLLISION_SOLVER_SW_H

servers/physics/constraint_sw.h

@@ -81,4 +81,4 @@ public:
 	virtual ~ConstraintSW() {}
 };
 
-#endif // CONSTRAINT__SW_H
+#endif // CONSTRAINT_SW_H

servers/physics/gjk_epa.h

@@ -37,4 +37,4 @@
 bool gjk_epa_calculate_penetration(const ShapeSW *p_shape_A, const Transform &p_transform_A, const ShapeSW *p_shape_B, const Transform &p_transform_B, CollisionSolverSW::CallbackResult p_result_callback, void *p_userdata, bool p_swap = false, real_t p_margin_A = 0.0, real_t p_margin_B = 0.0);
 bool gjk_epa_calculate_distance(const ShapeSW *p_shape_A, const Transform &p_transform_A, const ShapeSW *p_shape_B, const Transform &p_transform_B, Vector3 &r_result_A, Vector3 &r_result_B);
 
-#endif
+#endif // GJK_EPA_H

servers/physics/physics_server_sw.h

@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef PHYSICS_SERVER_SW
-#define PHYSICS_SERVER_SW
+#ifndef PHYSICS_SERVER_SW_H
+#define PHYSICS_SERVER_SW_H
 
 #include "joints_sw.h"
 #include "servers/physics_server.h"
@@ -370,4 +370,4 @@ public:
 	~PhysicsServerSW();
 };
 
-#endif
+#endif // PHYSICS_SERVER_SW_H

servers/physics/shape_sw.h

@@ -526,4 +526,4 @@ struct _ShapeTestConvexBSPSW {
 	}
 };
 
-#endif // SHAPESW_H
+#endif // SHAPE_SW_H

servers/physics/space_sw.h

@@ -208,4 +208,4 @@ public:
 	~SpaceSW();
 };
 
-#endif // SPACE__SW_H
+#endif // SPACE_SW_H

servers/physics/step_sw.h

@@ -46,4 +46,4 @@ public:
 	StepSW();
 };
 
-#endif // STEP__SW_H
+#endif // STEP_SW_H