[PR:12] "BridgeApi" - RemixApi wrapper for x86 games

- #12

- [REMIX-3433]
- Includes Remix API headers under new `ext/remix/` top-level dir
  - `remix_c.h` and `remix.h`
  - Added an #ifndef to be able to turn off non-x64 compiler error at top of `remix_c.h`
- Add new root dir `public/include/` for bridge-specific Remix API header
  - `public/include/remixapi/bridge_remix_api.h`
- Adds new util `Serializable<T>` helper class in `util_serializable.h`
  - Defines a uniform interface of functions to de-/serialize generic classes
- Adds new RemixApi util helpers in `util_remixapi.h/.cpp`
  - Defines `Serializable<T>`s for remixapi types, and adds extra helpers to handle their quirks
- Adds `remix_api.h/.cpp` to both Client and Server\
  - Helpers for handling the x86 -> x64 conversion

.gitignore

@@ -23,6 +23,7 @@
 _output/
 _output
 _comp*
+_Comp*
 _vs/**
 
 .history

bridge.conf

@@ -109,6 +109,17 @@
 # client.enableDpiAwareness = True
 
 
+# Exposes Remix API through the bridge, allowing d3d9-hooked applications
+# to call API functions directly, as opposed to going through the d3d9
+# API.
+# !!! EXPERIMENTAL !!! Defaults off until extensive testing results in
+# full validation.
+#
+# Supported values: True, False
+
+# client.exposeRemixApi = False
+
+
 #
 # Server Settings
 #