docs(Modules): added module userguide

Author: fubuloubu

docs/index.rst

@@ -4,6 +4,7 @@
         - transactions
         - safe_management
         - multisend
+        - modules
     :commands:
         - mgmt
         - pending

docs/userguides/modules.md

@@ -0,0 +1,57 @@
+# Modules
+
+The modules feature of your Safe account allows you to manage "extensions" to the behavior of your Safe,
+unlocking the ability to support automated actions or custom transaction logic _without signer approval_.
+
+```{warning}
+Safe Modules can be very dangerous to enable on your Safe, as it allows the Module
+(and accounts with access to the Module) to completely bypass the authentication logic in your Safe smart contract.
+Use at your own risk.
+```
+
+```{note}
+Read more about Safe Modules in the [docs](https://docs.safe.global/advanced/smart-account-modules).
+```
+
+## Basic Usage
+
+To enable or disable a Module in your Safe, you can do so via:
+
+```python
+from ape import accounts
+from ape_safe import multisend
+from ape_tokens import tokens
+
+me = accounts.load("my-key")
+safe = accounts.load("my-safe")
+
+module = Contract(...)  # NOTE: Deploy it yourself, or use vetted Safe modules
+
+# Check if module is enabled
+assert module not in safe.modules
+
+# Then add it
+receipt = safe.modules.enable(module, submitter=me)
+assert module in safe.modules
+
+# You can always disable it later
+receipt = safe.modules.disable(module, submitter=me)
+```
+
+## Advanced Usage
+
+Safe Modules also come with a Module Guard functionality, similiar to your Safe's Guard functionality.
+
+To set (or unset) a Module Guard, do so via:
+
+```python
+guard = Contract(...)  # NOTE: Deploy it yourself, or use a vetted Safe Module Guard
+
+assert not safe.modules.guard  # NOTE: Not set by default
+
+# Add a Module Guard
+safe.modules.set_guard(guard, submitter=me)
+
+# Remove a Module Guard
+safe.modules.remove_guard(submitter=me)
+```