Update issue templates

.github/ISSUE_TEMPLATE/new-bounty.md

@@ -0,0 +1,36 @@
+---
+name: New Bounty
+about: Propose a bounty for Waku
+title: "[BOUNTY] <Title of the bounty>"
+labels: open
+assignees: hackyguru
+
+---
+
+### Bounty summary
+
+<!-- Explain your bounty's executive summary that precisely describes the aim  -->
+
+### Impact
+
+<!-- Explain how your bounty positively contributes to the growth of Waku  -->
+
+###  Timeline
+
+<!-- Provide a suitable time frame for the bounty objectives to be delivered -->
+
+### Deliverables
+
+<!-- List out all the deliverables of the bounty  -->
+
+### Rewards
+
+<!-- Mention the reward for successfully completing the bounty  -->
+
+### Evaluation criteria
+
+<!-- Explain the guidelines, rules and other factors that help in evaluation  -->
+
+### Resources
+
+<!-- List out some of the resources that can be helpful in completing the bounty  -->