add template for creating new Foundry projects

foundry-template/.gitignore

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+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+!/broadcast
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env

foundry-template/README.md

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+## Foundry Template Setup
+
+Copy this folder to start a new Foundry project, then run the following to initialize the submodules:
+
+```bash
+$ forge install foundry-rs/forge-std
+$ forge install OpenZeppelin/openzeppelin-foundry-upgrades
+$ forge install OpenZeppelin/openzeppelin-contracts-upgradeable
+```

foundry-template/foundry.toml

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+[profile.default]
+solc = "0.8.25"
+evm_version = "cancun"
+src = "src"
+out = "out"
+libs = ["lib"]
+ffi = true
+ast = true
+build_info = true
+extra_output = ["storageLayout"]
+
+[fmt]
+single_line_statement_blocks = "multi"
+multiline_func_header = "params_first"
+sort_imports = true
+contract_new_lines = true
+bracket_spacing = true
+int_types = "long"
+quote_style = "double"
+number_underscore = "thousands"
+wrap_comments = true
+
+# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options
+
+remappings = [
+  "@openzeppelin/contracts/=lib/openzeppelin-contracts-upgradeable/lib/openzeppelin-contracts/contracts/",
+  "@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts/",
+]