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/pezkuwi-omni-node/README.md

@@ -47,7 +47,7 @@ cargo install pezstaging-chain-spec-builder --locked
 ### 2. Generate a chain spec
 
 Omni Node requires the chain spec to include a JSON key named `relay_chain`. It is set to a chain id,
-representing the chain name, e.g. `zagros`, `paseo`, `pezkuwichain`, `pezkuwi`, or `kusama`, but
+representing the chain name, e.g. `zagros`, `paseo`, `pezkuwichain`, `pezkuwi`, or `dicle`, but
 there are also local variants that can be used for testing, like `pezkuwichain-local` or `zagros-local`. The
 local variants are available only for a build of `pezkuwi-omni-node` with
 `zagros-native` and `pezkuwichain-native` features respectively.