Add template README

README.md

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+# Proposal title
+
+### Changes / effect description
+
+- 1
+- 2
+- ...
+
+### Requirements
+
+- Rust ([Need only for Windows](https://doc.rust-lang.org/cargo/getting-started/installation.html))
+- Foundryup ([Windows](https://github.com/altugbakan/foundryup-windows), [Linux](https://book.getfoundry.sh/getting-started/installation))
+- Node 14 or higher ([Windows](https://github.com/coreybutler/nvm-windows), [Linux](https://github.com/nvm-sh/nvm))
+
+### Installation
+
+```text
+git clone --recurse-submodules <proposal-repo-link>
+cd <proposal-name>
+npm install
+```
+
+### Testing
+
+```text
+npm run test
+```