change cuda-core license & make contributing guides clear

Author: leofang

CONTRIBUTING.md

@@ -9,4 +9,5 @@ Thank you for your interest in contributing to CUDA Python! Based on the type of
     them for a release. If you believe the issue needs priority attention
     comment on the issue to notify the team.
 2. You want to implement a feature or bug-fix
-    - At this time we do not accept code contributions.
+    - Please refer to each component's guideline: [`cuda.core`](https://nvidia.github.io/cuda-python/cuda-core/latest/contribute.html),
+    [`cuda.bindings`](https://nvidia.github.io/cuda-python/cuda-bindings/latest/contribute.html).

LICENSE

@@ -0,0 +1,3 @@
+Please refer to each component's license:
+   - [`cuda.core`](https://nvidia.github.io/cuda-python/cuda-core/latest/license.html),
+   - [`cuda.bindings`](https://nvidia.github.io/cuda-python/cuda-bindings/latest/license.html).

LICENSE.md

@@ -1,6 +1,6 @@
 # Contributing
 
-Thank you for your interest in contributing to CUDA Python! Based on the type of contribution, it will fall into two categories:
+Thank you for your interest in contributing to `cuda-bindings`! Based on the type of contribution, it will fall into two categories:
 
 1. You want to report a bug, feature request, or documentation issue
     - File an [issue](https://github.com/NVIDIA/cuda-python/issues/new)

cuda_python/docs/source/contribute.md renamed to cuda_bindings/docs/source/contribute.md

@@ -13,6 +13,8 @@
    api
    tips_and_tricks
    support
+   contribute.md
+   license
 
 
 Indices and tables