Add first enchanement proposal DEP0

Author: albertas

enhancement_proposals/dep_0.md

@@ -0,0 +1,9 @@
+## DEP 0 - Index of Deadcode Enhancement Proposals (DEPs)
+DEP stands for Deadcode Enhancement Proposal.
+
+A DEP is a design document for proposing new features or changes to Deadcode.
+It should provide a concise technical specification and a rationale for the feature.
+DEPs should document aspects of Deadcode, like design and usage, for the community.
+
+References:
+- https://peps.python.org/pep-0001/