[Add] Gingiris Marketing Playbooks

[Gingiris]

Resource Recommendation

Three go-to-market playbooks from former AFFiNE COO (60k star OSS):

1. AI Product Launch Playbook

• https://github.com/Gingiris/gingiris-launch
• Product Hunt SOP, KOL outreach, UGC growth

2. B2B SaaS Growth Playbook

• https://github.com/Gingiris/gingiris-b2b-growth
• PMF to ecosystem growth, HeyGen/Deel/Vercel cases

3. Open Source Launch Playbook

• https://github.com/Gingiris/gingiris-opensource
• GitHub star growth, Reddit marketing SOP

Author: Former AFFiNE COO, PH #1 Daily ×30