Adapt forward to output nodes of exports being pointer of pointer.

aidge_export_cpp/templates/kernel_forward/_mem_offset.jinja

+{% for outidx in range(nb_out) -%}
+{{out_cdtype[outidx]}}* {{out_name[outidx]}} = ({{out_cdtype[outidx]}}*) mem + {{out_name[outidx]|upper}}_OFFSET;
+{% endfor %}

aidge_export_cpp/templates/kernel_forward/activation_forward.jinja

-{% if not is_output %}
-{{out_cdtype[0]}}* {{out_name[0]}} = ({{out_cdtype[0]}}*) mem + {{out_name[0]|upper}}_OFFSET;
-{% endif %}
+{% include "./_mem_offset.jinja" %}
+
 activation_forward<{{name|upper}}_NB_DATA,
                    {{name|upper}}_ACTIVATION>
                    ({{in_name[0]}}, {{out_name[0]}}, {{name|upper}}_RESCALING);

aidge_export_cpp/templates/kernel_forward/batchnorm_forward.jinja

+{% include "./_mem_offset.jinja" %}
+
 batchnorm_forward<{{ out_name[0]|upper }}_NB_OUTPUTS,
                   {{ out_name[0]|upper }}_OUT_HEIGHT,
                   {{ out_name[0]|upper }}_OUT_WIDTH,

aidge_export_cpp/templates/kernel_forward/convolution_forward.jinja

-{% if not is_output %}
-{{out_cdtype[0]}}* {{out_name[0]}} = ({{out_cdtype[0]}}*) mem + {{out_name[0]|upper}}_OFFSET;
-{% endif %}
+{% include "./_mem_offset.jinja" %}
+
 convolution_forward<{{ in_name[0]|upper }}_NB_CHANNELS,
                     {{ in_name[0]|upper }}_IN_HEIGHT,
                     {{ in_name[0]|upper }}_IN_WIDTH,

aidge_export_cpp/templates/kernel_forward/elemwise_forward.jinja

-{% if not is_output %}
-{{out_cdtype[0]}}* {{out_name[0]}} = ({{out_cdtype[0]}}*) mem + {{out_name[0]|upper}}_OFFSET;
-{% endif %}
+{% include "./_mem_offset.jinja" %}
+
 elemwise_forward<{{name|upper}}_NB_ELTS,
                  {{name|upper}}_ELEM_OP,
                  {{name|upper}}_ACTIVATION>

aidge_export_cpp/templates/kernel_forward/fullyconnected_forward.jinja

-{% if not is_output %}
-{{out_cdtype[0]}}* {{out_name[0]}} = ({{out_cdtype[0]}}*) mem + {{out_name[0]|upper}}_OFFSET;
-{% endif %}
+{% include "./_mem_offset.jinja" %}
+
 fullyconnected_forward<{{ in_name[0]|upper }}_NB_CHANNELS,
                        {{ in_name[0]|upper }}_IN_HEIGHT,
                        {{ in_name[0]|upper }}_IN_WIDTH,

aidge_export_cpp/templates/kernel_forward/leakyrelu_forward.jinja

+{% include "./_mem_offset.jinja" %}
+
 leakyrelu_forward<{{name|upper}}_NB_DATA>
                    ({{input_name}}, {{output_name}}, {{name|upper}}_ALPHA);
 {% include "./_save_outputs.jinja" %}

aidge_export_cpp/templates/kernel_forward/pooling_forward.jinja

-{% if not is_output %}
-{{out_cdtype[0]}}* {{out_name[0]}} = ({{out_cdtype[0]}}*) mem + {{out_name[0]|upper}}_OFFSET;
-{% endif %}
+{% include "./_mem_offset.jinja" %}
+
 pooling_forward<{{ in_name[0]|upper }}_NB_CHANNELS,
                 {{ in_name[0]|upper }}_IN_HEIGHT,
                 {{ in_name[0]|upper }}_IN_WIDTH,