Attention to writing secure code

[shahryarjb]

Please consider these link after version 3

• [ ] https://erlef.github.io/security-wg/secure_coding_and_deployment_hardening/
• [ ] https://github.com/nccgroup/sobelow
• [ ] https://github.com/mirego/mix_audit
• [ ] https://felt.com/blog/rate-limiting
• [ ] https://paraxial.io/
• [ ] https://github.com/slab/safeurl-elixir
• [ ] https://github.com/podium/elixir-secure-coding
• [ ] https://www.youtube.com/watch?v=w3lKmFsmlvQ