Update BB-config improvements & GPIO Benchmarking

BB-config improvements & GPIO Benchmarking

• Add Blog links into readme
• Create post in https://gsoc.beagleboard.io/
• Add project detail into the post

_posts/2022-07-06-BB-Config-Improvements.md

+---
+layout: post
+title: 'BB-config improvements & GPIO Benchmarking'
+---
+
+BB-config improvements & GPIO Benchmarking project:
+Student: Jian De
+Mentors: Shreyas Atre, Vedant Paranjape, Vaishnav Achath
+
+[Proposal](https://elinux.org/BeagleBoard/GSoC/2022_Proposal/bb-config_improvements_%26_GPIO_Benchmarking)
+[Repository](https://git.beagleboard.org/gsoc/bb-config)
+[Weekly Report](https://gsoc.beagleboard.io/bb-config/)
+[Introductory Video](https://youtu.be/V_Euk5uWY1o)