Add Hermes Tweet to the skill atlas

[kriptoburak]

Summary

• Add hermes-tweet to data/skills.json in the communications/social category.
• Describe the concrete Hermes Agent X/Twitter workflows: search tweets, read replies, monitor trends, and approval-gated posting actions.

Fit And Duplicate Checks

• Followed CONTRIBUTING.md: one skill, data/skills.json only, concise description, public GitHub repo, install command included.
• Checked repository contents for hermes-tweet, Hermes Tweet, Xquik, xquik, tweet, Twitter, and X/Twitter.
• Checked open and closed PRs and issues for the same terms.
• Found existing built-in X/Twitter entries such as xitter and xurl, but no Hermes Tweet or Xquik listing. This entry is for the native Hermes plugin with tweet search, reply reads, trend monitoring, and gated action tools.

Verification

• node -e 'JSON.parse(require("fs").readFileSync("data/skills.json", "utf8")); console.log("skills-json-ok")'
• git diff --check