Add tx-pause to all runtimes

[AurevoirXavier]

No description provided.

[boundless-forest]

Please add darwinia_common_runtime::impl_maintenance_tests! {} to the test file under each runtime.

[github-actions]

Check 4d5a8f8 pangoro-dev

Check runtime version

Check runtime storage

[github-actions]

Check 4d5a8f8 pangolin-dev

Check runtime version

Check runtime storage

- Pallet: "Council"
- Pallet: "Democracy"

[github-actions]

Check 4d5a8f8 crab-dev

Check runtime version

RuntimeVersion {
    spec_name: "Crab2",
    impl_name: "DarwiniaOfficialRust",
    authoring_version: 0,
-   spec_version: 6511,
+   spec_version: 6510,
    impl_version: 0,
    transaction_version: 0,
    state_version: 0,
}

Check runtime storage

- Pallet: "Council"
- Pallet: "Democracy"
- Pallet: "EcdsaAuthority"
- Pallet: "MessageGadget"
+ Pallet: "TxPause"

[github-actions]

Check 4d5a8f8 darwinia-dev

Check runtime version

RuntimeVersion {
    spec_name: "Darwinia2",
    impl_name: "DarwiniaOfficialRust",
    authoring_version: 0,
-   spec_version: 6511,
+   spec_version: 6510,
    impl_version: 0,
    transaction_version: 0,
    state_version: 0,
}

Check runtime storage

+ Pallet: "ConvictionVoting"
- Pallet: "PhragmenElection"
+ Pallet: "Referenda"
- Pallet: "TechnicalMembership"
+ Pallet: "TxPause"
+ Pallet: "Whitelist"