pass ext params to BBB even without a mapping to an LMS param (#420)

therefore, you can either input an lms-param-name:bbb-param-name mapping in the broker ext_params rake task, and Rooms will pull the value form the launch params,
 or you can input a bbb-param-name:bbb-param-value setting in the rake task, which will be passed directly

Author: Mariam05

app/controllers/concerns/bbb_helper.rb

@@ -335,11 +335,15 @@ def string_to_bool(value)
   # Note:
   #   The value in ext_params from the tenant settings is the name that should be passed to BBB. And it can be a comma separated list.
   def add_ext_params(action, options)
-    @extra_params_to_bbb[action]&.each do |key, value|
-      # the value in ext_params from the tenant settings is the name that should be passed to BBB
-      bbb_names = @broker_ext_params&.[](action)&.[](key)&.split(',')
-      bbb_names&.each do |bbb_name|
-        options[bbb_name.strip.to_sym] = value if bbb_name
+    @extra_params_to_bbb[action]&.each do |key, value_hash|
+      if value_hash[:mapping] == true
+        # the value in ext_params from the tenant settings is the name that should be passed to BBB
+        bbb_names = @broker_ext_params&.[](action)&.[](key)&.split(',')
+        bbb_names&.each do |bbb_name|
+          options[bbb_name.strip.to_sym] = value_hash[:value]
+        end
+      else
+        options[key.to_sym] = value_hash[:value]
       end
     end
   end

app/controllers/rooms_controller.rb

@@ -599,9 +599,14 @@ def launch_and_extra_params_intersection_hash(launch_params, action, actions_has
 
   def calculate_intersection_hash(launch_params, actions_hash)
     result = {}
-    actions_hash&.each_key do |key|
-      value = find_launch_param(launch_params, key)
-      result[key] = value if value
+    actions_hash&.each do |key, broker_value|
+      lms_value = find_launch_param(launch_params, key)
+
+      result[key] = if lms_value
+                      { value: lms_value, mapping: true }
+                    else
+                      { value: broker_value, mapping: false }
+                    end
     end
     result
   end