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

bizinikiwi/pezframe/fast-unstake/src/tests.rs

@@ -1112,7 +1112,7 @@ mod batched {
 }
 
 #[test]
-fn kusama_estimate() {
+fn dicle_estimate() {
 	use crate::WeightInfo;
 	let block_time = pezframe_support::weights::Weight::from_parts(
 		pezframe_support::weights::constants::WEIGHT_REF_TIME_PER_SECOND * 2,