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

umbrella/src/lib.rs

@@ -75,7 +75,7 @@ pub use pez_generate_bags;
 #[cfg(feature = "pez-slot-range-helper")]
 pub use pez_slot_range_helper;
 
-/// Generate and restore keys for Bizinikiwi based chains such as Pezkuwi, Kusama and a growing number of teyrchains and Bizinikiwi based projects.
+/// Generate and restore keys for Bizinikiwi based chains such as Pezkuwi, Dicle and a growing number of teyrchains and Bizinikiwi based projects.
 #[cfg(feature = "pez-subkey")]
 pub use pez_subkey;