Updated contributing, issue templates and docs

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,12 +1,23 @@
 ---
 name: Feature request
-about: Suggest an idea for TermSCP
-title: "[Feature Request]"
-labels: enhancement
-assignees: ChristianVisintin
+about: Suggest an idea to improve termscp
+title: "[Feature Request] - FEATURE_TITLE"
+labels: "new feature"
+assignees: veeso
 
 ---
 
 ## Description
 
-Describe the feature you'd like to be added
+Put here a brief introduction to your suggestion.
+
+### Changes
+
+The following changes to the application are expected
+
+- ...
+
+## Implementation
+
+Provide any kind of suggestion you propose on how to implement the feature.
+If you have none, delete this section.