docs: separate documentation from README.md

docs/other-projects.md

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+# Other projects
+
+## Looking for Electron templates made with React?
+
+Also check out the `Retron` project, which consists of Vite + React + Material-UI + Electron.
+
+https://github.com/jooy2/retron
+
+## (Deprecated) Looking for Vutron with webpack5 compiler?
+
+By using the Vite compiler, we achieved our goals of reducing project and bundle size, and improving development environment and build speed.
+
+The old Vutron using the Webpack5 compiler has been split into the repositories below and will end support soon.
+
+https://github.com/jooy2/vutron-webpack