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

bopytex/worker/generate.py

@@ -4,12 +4,26 @@ from bopytex.message import Message
 
 
 def generate(args, deps, output):
-    env = args["jinja2"]["environment"]
+    env = args["options"]["jinja2"]["environment"]
     template = env.get_template(deps[0])
 
+    variables = {
+            "options":args["options"],
+            "subject":args["subject"],
+            }
+
+    try:
+        args["options"]["direct_access"]
+    except KeyError:
+        pass
+    else:
+        for (k,v) in args["options"]["direct_access"].items():
+            if k not in ["options", "subject"]:
+                variables[k] = v
+
     try:
         with open(output, "w") as out:
-            fed = template.render(args)
+            fed = template.render(variables)
             out.write(fed)
 
         return Message(0, [f"GENERATE - {deps[0]} to {output}"], [])