Tool System: split UI label from tool identifiers

Prepare for exposing tool registration to the Python API.

- Generated tools can use their own prefix so naming collisions
  won't happen between hard coded & generated tools.
- Add-on authors can use the add-on name as a prefix.

Currently the names match, renaming will happen next.

release/scripts/startup/bl_operators/wm.py

@@ -1486,14 +1486,14 @@ class WM_OT_owner_disable(Operator):
 
 
 
-class WM_OT_tool_set_by_name(Operator):
+class WM_OT_tool_set_by_id(Operator):
     """Set the tool by name (for keymaps)"""
-    bl_idname = "wm.tool_set_by_name"
+    bl_idname = "wm.tool_set_by_id"
     bl_label = "Set Tool By Name"
 
     name: StringProperty(
-        name="Text",
-        description="Display name of the tool",
+        name="Identifier",
+        description="Identifier of the tool",
     )
     cycle: BoolProperty(
         name="Cycle",
@@ -1518,8 +1518,8 @@ class WM_OT_tool_set_by_name(Operator):
 
     def execute(self, context):
         from bl_ui.space_toolsystem_common import (
-            activate_by_name,
-            activate_by_name_or_cycle,
+            activate_by_id,
+            activate_by_id_or_cycle,
         )
 
         if self.properties.is_property_set("space_type"):
@@ -1527,7 +1527,7 @@ class WM_OT_tool_set_by_name(Operator):
         else:
             space_type = context.space_data.type
 
-        fn = activate_by_name_or_cycle if self.cycle else activate_by_name
+        fn = activate_by_id_or_cycle if self.cycle else activate_by_id
         if fn(context, space_type, self.name):
             return {'FINISHED'}
         else:
@@ -1800,7 +1800,7 @@ classes = (
     WM_OT_owner_disable,
     WM_OT_owner_enable,
     WM_OT_url_open,
-    WM_OT_tool_set_by_name,
+    WM_OT_tool_set_by_id,
     WM_OT_toolbar,
     WM_MT_splash,
 )