Rebrand subxt to pezkuwi-subxt with pezsp_runtime support

- Renamed all crate names from subxt-* to pezkuwi-subxt-*
- Updated codegen to use pezsp_runtime, pezsp_core, pezframe_support instead of sp_runtime, sp_core, frame_support
- Replaced all internal references from subxt_* to pezkuwi_subxt_*
- Added local path dependencies to Pezkuwi SDK crates
- Updated workspace configuration for edition 2024

utils/fetch-metadata/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "subxt-utils-fetchmetadata"
+name = "pezkuwi-subxt-utils-fetchmetadata"
 version.workspace = true
 authors.workspace = true
 edition.workspace = true

utils/strip-metadata/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "subxt-utils-stripmetadata"
+name = "pezkuwi-subxt-utils-stripmetadata"
 version.workspace = true
 authors.workspace = true
 edition.workspace = true