feat: add treasury

Cargo.lock

node/src/chain_spec/gdev.rs

pallets/duniter-account/Cargo.toml

pallets/duniter-account/src/lib.rs

runtime/common/Cargo.toml

runtime/common/src/handlers.rs

runtime/common/src/pallets_config.rs

runtime/g1/Cargo.toml

runtime/g1/src/lib.rs

runtime/g1/src/parameters.rs

runtime/gdev/Cargo.toml

runtime/gdev/src/lib.rs

runtime/gdev/src/parameters.rs

runtime/gdev/tests/integration_tests.rs

runtime/gtest/Cargo.toml

runtime/gtest/src/lib.rs

runtime/gtest/src/parameters.rs