[ref] dbs: rename db dunp to network

rust-bins/duniter-dbex/src/cli.rs

rust-bins/duniter-dbex/src/main.rs

rust-libs/duniter-dbs/src/databases.rs

rust-libs/duniter-dbs/src/databases/network_v1.rs

rust-libs/duniter-dbs/src/lib.rs

rust-libs/duniter-dbs/src/open_dbs.rs

rust-libs/duniter-server/src/legacy/dunp.rs

rust-libs/duniter-server/src/lib.rs

rust-libs/modules/gva/dbs-reader/src/lib.rs

rust-libs/modules/gva/dbs-reader/src/network.rs

rust-libs/modules/gva/gql/src/queries/network.rs