Feature/array object refactoring (#2)

* Array object refactoring

* Structure refactoring

* Index.py and broadcast.py refactoring

* Fix imports and typings

* Add comments for placed hacks

Author: roaffix

.github/workflows/ci.yml

@@ -9,7 +9,7 @@ on:
       - master
 
 env:
-  DEFAULT_PYTHON_VERSION: "3.10"
+  DEFAULT_PYTHON_VERSION: "3.8"
 
 jobs:
   build:

arrayfire/__init__.py

@@ -0,0 +1,9 @@
+__all__ = [
+    # array objects
+    "Array",
+    # dtypes
+    "int16", "int32", "int64", "uint8", "uint16", "uint32", "uint64", "float32", "float64",
+    "complex64", "complex128", "bool"]
+
+from .array.array_object import Array
+from .dtypes import bool, complex64, complex128, float32, float64, int16, int32, int64, uint8, uint16, uint32, uint64

arrayfire/array/__init__.py

@@ -0,0 +1,3 @@
+__all__ = ["Array"]
+
+from .array_object import Array