Add half precision floating point support to StreamPeer

Closes godotengine/godot-proposals#5983

Adds put/get methods to `StreamPeer` that handles half precision
floating point values.
Adds endode/decode half precision floating point to `marshalls`.
Adds `get_half` and `store_half` to `FileAccess`

Co-Authored-By: "Alfonso J. Ramos" <theraot@gmail.com>

.pre-commit-config.yaml

@@ -187,7 +187,8 @@ repos:
             modules/gdscript/tests/scripts/parser/warnings/empty_file_newline_comment\.notest\.gd$|
             modules/gdscript/tests/scripts/parser/warnings/empty_file_newline\.notest\.gd$|
             platform/android/java/editor/src/main/java/com/android/.*|
-            platform/android/java/lib/src/com/google/.*
+            platform/android/java/lib/src/com/google/.*|
+            tests/data/.*\.bin$
           )
 
       - id: dotnet-format