add peft merging blog post.

[sayakpaul]

Following huggingface/peft#1364.

Joint work with @pacman100.

Cc: @prateeky2806 @yule-BUAA in case you want to proof-read and review :-)

[prateeky2806]

Hi @sayakpaul and @pacman100, thank you for writing this blog post. I skimmed over it and left a few comments in general looks good to me.
Let me know when you plan to announce this on Twitter/HF discord, I will share it with people in my circle.

[yule-BUAA]

Hi @sayakpaul and @pacman100, thanks for this excellent blog post. I have completed the proofreading and left several comments on my understanding. Hope this will help. ^_^

Please let me know when you want to post this blog, and I will be glad to share it with other people as well.

[pacman100]

Hello, we are planning on communicating about this on Monday US morning time.

[pacman100]

Thank you @prateeky2806 and @yule-BUAA for the valuable feedback and suggestions! ✨

[pacman100]

Approving the PR for merging! Thank you @sayakpaul for the great initiative and all the work! 🤗

[sayakpaul]

Thank you. Kudos to you for leading the integration!

Merging since it's been already proof-read by @prateeky2806 and @yule-BUAA!