Initialize MemDev with a single Plasmo extension project

[Copilot]

This change bootstraps the repository into one main Plasmo project folder, aligning the repo with the requested extension-first setup. The project now has a runnable/maintainable Plasmo baseline under memdev/.

• Project scaffold

  • Added a full Plasmo starter app in memdev/ (popup entrypoint, assets, TS config, formatter config, README, and extension workflow files).
  • Established memdev/ as the single main project folder for extension development.

• Package metadata and dependency correctness

  • Updated extension identity in memdev/package.json to match the repository context (name: "memdev", displayName: "MemDev").
  • Replaced the template-local workspace:* Plasmo dependency with a concrete semver dependency to make installs work in this standalone repository.

• Resulting repository shape

  • Root remains lightweight (README.md + project folder), with all extension code and config scoped to memdev/.

{
  "name": "memdev",
  "displayName": "MemDev",
  "dependencies": {
    "plasmo": "^0.90.5"
  }
}

Original prompt

With one main project folder , initialize a plasmo project