[V3] move to multiple issue/pr templates (#1585)

.github/ISSUE_TEMPLATE/feature_req.md

@@ -0,0 +1,35 @@
+# Feature request
+
+<!-- This template is for feature requests. Please fill out the following: -->
+
+
+#### Select the type of feature you are requesting:
+
+<!-- To check a box, replace the space between the [] with a x -->
+
+- [ ] Cog
+- [ ] Command
+- [ ] API functionality
+
+#### Describe your requested feature
+
+<!--
+Feel free to describe in as much detail as you wish.
+
+If you are requesting a cog to be included in core: 
+    - Describe the functionality in as much detail as possible
+    - Include the command structure, if possible
+    - Please note that unless it's something that should be core functionality,
+      we reserve the right to reject your suggestion and point you to our cog 
+      board to request it for a third-party cog
+      
+If you are requesting a command:
+    - Include what cog it should be in and a name for the command
+    - Describe the intended functionality for the command
+    - Note any restrictions on who can use the command or where it can be used
+
+If you are requesting API functionality:
+    - Describe what it should do
+    - Note whether it is to extend existing functionality or introduce new functionality
+   
+-->