Compile with capture (#629)

* Simple kernel generation

* Remove the generate kernel from graph_utils

* fix multi-output with compile

* fuse with stopgrad

* v1 input, output capture in compile

* cleanup tree update with visitor update

* nit

* remove todo

* state for model, optional explicit init and more pure optimizer steps

* move learning rate to state

* add lr to opt state, some fixes in capture

* fix optim

* update tuple of containers as well

* fix stream for compiled output

* rng state for compile

* nit

* updates and comments

---------

Co-authored-by: Angelos Katharopoulos <a_katharopoulos@apple.com>

docs/src/_templates/nn-module-template.rst

@@ -1,19 +0,0 @@
-{{ fullname | escape | underline}}
-
-.. currentmodule:: {{ module }}
-
-.. autoclass:: {{ objname }}
-
-   {#{% block methods %}
-
-   {% if methods %}
-   .. rubric:: {{ _('Methods') }}
-
-   .. autosummary::
-   {% for item in methods %}
-      {%- if item not in inherited_members and item != '__init__' %}
-         ~{{ name }}.{{ item }}
-      {%- endif %}
-   {%- endfor %}
-   {% endif %}
-   {% endblock %}#}