Allow alphanumeric block module name + fix slant3d import (#8857)

- Merges into #8805
- Resolves #8858

### Changes
- Allows block module names to be alphanumeric
- Renames `slantthreed` to `slant3d`

autogpt_platform/backend/backend/blocks/__init__.py

@@ -15,10 +15,10 @@
     if f.is_file() and f.name != "__init__.py"
 ]
 for module in modules:
-    if not re.match("^[a-z_.]+$", module):
+    if not re.match("^[a-z0-9_.]+$", module):
         raise ValueError(
             f"Block module {module} error: module name must be lowercase, "
-            "separated by underscores, and contain only alphabet characters"
+            "and contain only alphanumeric characters and underscores."
         )
 
     importlib.import_module(f".{module}", package=__name__)

autogpt_platform/backend/backend/blocks/slantthreed/base.py → autogpt_platform/backend/backend/blocks/slant3d/base.py

@@ -1,9 +1,10 @@
 from typing import Any, Dict
 
-from backend.blocks.slantthreed._api import Color, CustomerDetails, OrderItem, Profile
 from backend.data.block import Block
 from backend.util.request import requests
 
+from ._api import Color, CustomerDetails, OrderItem, Profile
+
 
 class Slant3DBlockBase(Block):
     """Base block class for Slant3D API interactions"""

autogpt_platform/backend/backend/integrations/webhooks/__init__.py

@@ -1,8 +1,7 @@
 from typing import TYPE_CHECKING
 
-from backend.integrations.webhooks.slantthreed import Slant3DWebhooksManager
-
 from .github import GithubWebhooksManager
+from .slant3d import Slant3DWebhooksManager
 
 if TYPE_CHECKING:
     from .base import BaseWebhooksManager