Code clean and add governance project (#155)

* governance

* CI

* script

* fix types and compile

* clean indexerHints

* Add dcdao and ringdao

Author: fewensa

.github/workflows/check-index.yml

@@ -40,11 +40,7 @@ jobs:
     strategy:
       matrix:
         project:
-          - name: ethv2
-            chain: darwinia
-          - name: feemarket
-            chain: ethereum
-          - name: feemarket
+          - name: governance
             chain: darwinia
           - name: ormpipe
             chain: crab