add wip ios page

Author: matcool

misc/index.md

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+---
+title: Miscellaneous
+order: 6
+---
+
+These pages contain miscellaneous but useful information, that does not fit elsewhere.

misc/ios.md

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+---
+title: iOS Development Setup
+---
+
+# iOS Development Setup
+
+Something something preamble
+
+You will have to edit your `CMakeLists.txt` on your exiting mods. Newer created mods will already have this change
+```cmake
+# At the beginning of your CMakeLists.txt, change this:
+#  set(CMAKE_OSX_ARCHITECTURES "arm64;x86_64")
+# into:
+if ("${CMAKE_SYSTEM_NAME}" STREQUAL "iOS" OR IOS)
+    set(CMAKE_OSX_ARCHITECTURES "arm64")
+else()
+    set(CMAKE_OSX_ARCHITECTURES "arm64;x86_64")
+endif()
+```
+
+
+## Github Actions
+To build your mod for iOS using `geode-sdk/build-geode-mod`, you have to add iOS to the build matrix, like so:
+```yml
+- name: iOS
+  os: macos-latest
+  target: iOS
+```
+
+As of writing this, iOS support is only available on nightly Geode, so make sure to add this to the options of the `build-geode-mod` step
+```yml
+sdk: nightly
+```