Add experimental EOF options for CLI and Standard JSON.

Co-authored-by: Kamil Śliwak <kamil.sliwak@codepoets.it>

libsolidity/interface/CompilerStack.h

@@ -181,6 +181,10 @@ public:
 	/// Must be set before parsing.
 	void setEVMVersion(langutil::EVMVersion _version = langutil::EVMVersion{});
 
+	/// Set the EOF version used before running compile.
+	/// If set to std::nullopt (the default), legacy non-EOF bytecode is generated.
+	void setEOFVersion(std::optional<uint8_t> version);
+
 	/// Set model checker settings.
 	void setModelCheckerSettings(ModelCheckerSettings _settings);
 
@@ -498,6 +502,7 @@ private:
 	State m_stopAfter = State::CompilationSuccessful;
 	bool m_viaIR = false;
 	langutil::EVMVersion m_evmVersion;
+	std::optional<uint8_t> m_eofVersion;
 	ModelCheckerSettings m_modelCheckerSettings;
 	std::map<std::string, std::set<std::string>> m_requestedContractNames;
 	bool m_generateEvmBytecode = true;