Feat: arrange variables for templates

Split in 3 categories
- from "options" key build with default_config, file_config and cli options
- from "subject" key build csv or quantity of subject
- other in direct access from "direct_access" dictionnary inside the
  file_config

test/worker/test_generate.py

@@ -27,7 +27,13 @@ def test_generate(template_path, jinja2_env):
     output = "output"
 
     message = generate(
-        args={"a": 2, "jinja2": {"environment": jinja2_env}},
+        args={
+            "options": {
+                "direct_access": {"a": 2},
+                "jinja2": {"environment": jinja2_env},
+                },
+            "subject": {},
+            },
         deps=[template],
         output=output,
     )
@@ -59,10 +65,18 @@ def test_generate_with_random(template_path_with_random, jinja2_env):
     import random
 
     message = generate(
-        args={"random": random, "jinja2": {"environment": jinja2_env}},
+        args={
+            "options": {
+                "jinja2": {"environment": jinja2_env},
+                "direct_access": {
+                    "random": random,
+                    }
+                },
+            "subject":{},
+            },
         deps=[template],
         output=output,
-        )
+    )
     print(message.err)
     assert message.status == 0