rebrand: kusama → dicle

- Replace all kusama/Kusama references with dicle/Dicle
- Rename weight files from ksm_size to dcl_size
- Update papi-tests files from ksm to dcl
- Remove chain-specs/kusama.json files
- cargo check --workspace successful (Finished output)
- Update MAINNET_ROADMAP.md: FAZ 8 completed

pezcumulus/teyrchains/runtimes/assets/test-utils/src/test_cases.rs

@@ -793,7 +793,7 @@ pub fn asset_transactor_transfer_with_local_consensus_currency_works<Runtime, Xc
 					interior: [AccountId32 { network: None, id: target_account.clone().into() }]
 						.into(),
 				},
-				// local_consensus_currency_asset, e.g.: relaychain token (KSM, HEZ, ...)
+				// local_consensus_currency_asset, e.g.: relaychain token (DCL, HEZ, ...)
 				(
 					Location { parents: 1, interior: Here },
 					(BalanceOf::<Runtime>::from(1_u128) * unit).into(),