Proxy sudo validator, session-key management, and staking

[girazoki]

Adds the following proxies:

• sudoValidatorManagement: to be able to handle through sudo externalValidators and slashes
• SessionKeyManagement: to be able to handle session-keys through a proxy
• Staking: to be able to handle staking operations through session-keys

[github-actions]

WASM runtime size check:

Compared to target branch

dancebox runtime: 1416 KB (no changes) ✅

flashbox runtime: 824 KB (no changes) ✅

dancelight runtime: 2152 KB (+2152 KB) ⚠️

container chain template simple runtime: 1124 KB (-4296 KB) ✅

container chain template frontier runtime: 1400 KB (-5152 KB) ✅

[github-actions]

Coverage Report

(master)

@@                       Coverage Diff                        @@
##           master   girazoki-proxy-sudoValidator      +/-   ##
================================================================
- Coverage   65.25%                         65.24%   -0.01%     
  Files         329                            329              
+ Lines       57691                          57701      +10     
================================================================
  Hits        37646                          37646              
+ Misses      20045                          20055      +10     

Files Changed	Coverage
/solo-chains/runtime/dancelight/src/lib.rs	67.60% (-0.39%)	❗

Coverage generated Fri Jan 3 11:57:49 UTC 2025