init file now runs auto-installer

The init file will now check if you have the right addons, and install only the ones you are missing.
HOWEVER, one of these addons is 37mb, another is 2mb, so if you click New > BLUI, and you're missing Mr Mannequins Tools, and Textools, you'll be left looking at what appears to be a frozen Blender, as the complete install process (6 addons) took a full 5 minutes of waiting on a stalled Blender to come through. 
But come through it did!
So I will have to update the docs about that.
There was also a small formatting error in the keymap that caused the Walk modal map to be deleted! What!?!?
But it has also been fixed.

Author: SpectralVectors

BLUI_Keymap.py

@@ -11450,11 +11450,7 @@
  ("View3D Walk Modal",
   {"space_type": 'EMPTY', "region_type": 'WINDOW', "modal": True},
   {"items":
-   [("CANCEL",
-     {"type": 'RIGHTMOUSE', "value": 'ANY', "any": True},
-     {    "active":False,
-      },
-     ),
+   [("CANCEL", {"type": 'RIGHTMOUSE', "value": 'ANY', "any": True},{"active":False,},),
     ("CANCEL", {"type": 'ESC', "value": 'PRESS', "any": True, "repeat": True}, None),
     ("CONFIRM", {"type": 'RIGHTMOUSE', "value": 'RELEASE', "any": True}, None),
     ("CONFIRM", {"type": 'RET', "value": 'PRESS', "any": True, "repeat": True}, None),

__init__.py

@@ -1,19 +1,98 @@
-# BLUI v0.8.2
+# BLUI v0.8.3
 
-import bpy
+import bpy, os, urllib.request, addon_utils
 from bpy.app.handlers import persistent
 
+@persistent
+def load_handler_for_preferences(_):
+    print("Changing Preference Defaults!")
+    #from . import BLUI_Keymap
+
+    string = bpy.app.version_string
+    blenderversion = string.rstrip(string[-2:])
+    keymap_filepath = str(os.path.expanduser('~/AppData/Roaming/Blender Foundation/Blender/')) + blenderversion + str('/scripts/startup/bl_app_templates_user/BLUI/BLUI_Keymap.py')
+
+    bpy.ops.preferences.keyconfig_import(filepath=keymap_filepath)
+    bpy.ops.preferences.keyconfig_activate(filepath=keymap_filepath)
+
 @persistent
 def load_handler_for_startup(_):
     print("Changing Startup Defaults!")
 
+    prefs = bpy.context.preferences
+    active_addons = prefs.addons
+
+    addons = []
+    addon = {
+        'addon_name':'',
+        'url':'',
+        }
+        
+    addon1 = addon.copy()
+    addon1['addon_name'] = 'MrMannequinsTools'
+    addon1['url'] = 'https://github.com/Jim-Kroovy/Mr-Mannequins-Tools/releases/download/v1.4/MrMannequinsTools-1.4.zip'
+
+    addon2 = addon.copy()
+    addon2['addon_name'] = 'blender-for-unrealengine'
+    addon2['url'] = 'https://github.com/xavier150/Blender-For-UnrealEngine-Addons/releases/download/v0.2.8/blender-for-unrealengine.zip'
+
+    addon3 = addon.copy()
+    addon3['addon_name'] = 'TexTools_1_4_4'
+    addon3['url'] = 'https://github.com/SavMartin/TexTools-Blender/releases/download/v1.4.4/TexTools_1_4_4.zip'
+
+    addon4 = addon.copy()
+    addon4['addon_name'] = 'modifier_stack_manager'
+    addon4['url'] = 'https://github.com/salaivv/modifier-stack-manager/releases/download/0.2/modifier_stack_manager.zip'
+
+    addon5 = addon.copy()
+    addon5['addon_name'] = 'RightMouseNavigation'
+    addon5['url'] = 'https://github.com/SpectralVectors/RightMouseNavigation/releases/download/1.8/RightMouseNavigation.zip'
+
+    addon6 = addon.copy()
+    addon6['addon_name'] = 'CommentBox-main'
+    addon6['url'] = 'https://github.com/SpectralVectors/CommentBox/archive/refs/heads/main.zip'
+
+    for addon in active_addons:
+
+        if addon_utils.check('MrMannequinsTools') == (True, False):
+            addons.append(addon1)
+            
+        if addon_utils.check('blender-for-unrealengine') == (True, False):
+            addons.append(addon2)        
+            
+        if addon_utils.check('TexTools_1_4_4') == (True, False):
+            addons.append(addon3)      
+            
+        if addon_utils.check('modifier_stack_manager') == (True, False):
+            addons.append(addon4)       
+            
+        if addon_utils.check('RightMouseNavigation') == (True, False):
+            addons.append(addon5)        
+            
+        if addon_utils.check('CommentBox-main') == (True, False):
+            addons.append(addon6)
+
+    for addon in addons:
+        url_file = bpy.path.basename(addon['url'])
+        module_name = bpy.path.display_name_from_filepath(addon['url'])
+        filepath = str(os.path.expanduser('~/Downloads/') + url_file)
+        file = urllib.request.urlretrieve(addon['url'], filepath)
+        overwrite_setting = False
+        bpy.ops.preferences.addon_install(overwrite=overwrite_setting, filepath=filepath)
+        try:
+            bpy.ops.preferences.addon_enable(module=module_name)
+        except: # ModuleNotFoundError
+            bpy.ops.preferences.addon_enable(module=addon['addon_name'])        
+
     bpy.ops.wm.splash('INVOKE_DEFAULT')
 
 def register():
     print("Registering to Change Defaults")
+    bpy.app.handlers.load_factory_preferences_post.append(load_handler_for_preferences)
     bpy.app.handlers.load_factory_startup_post.append(load_handler_for_startup)
 
 
 def unregister():
     print("Unregistering to Change Defaults")
+    bpy.app.handlers.load_factory_preferences_post.remove(load_handler_for_preferences)
     bpy.app.handlers.load_factory_startup_post.remove(load_handler_for_startup)