feat: add an REP template (#8)

Add an REP template to assist the Community members in drafting new REPs
in a consistent format.

REPs/REP-Template.md

@@ -0,0 +1,32 @@
+```
+REP: REP-Template
+Title: REP Template
+Status: Draft
+Type: Core/Protocol/Process/Informational
+Created: 01 Jan 1970
+Author(s): jane@doe.com
+Description: This is a template for drafting new REPs.
+Discussions: <https://forum.rss3.io/t/how-to-start-an-rep/39>
+```
+
+# REP-Template: REP Template
+
+## Abstract
+
+### ***This is not an official REP***
+
+This is a template for drafting new REPs.
+
+Duplicate this file and fill in the blank sections to create a new REP. Add optional sections when needed.
+
+Use `REP-Template` for all drafts (and assets when applicable), the Editors will assign a new number when the REP is ready to be merged.
+
+Please check [REP-1](./REP-1.md) for the format.
+
+### ***This is not an official REP***
+
+## Motivation
+
+## Specification
+
+## Rationale