Adds prettier as a hook and github action

.github/workflows/main.yaml

@@ -67,6 +67,13 @@ jobs:
 
     - name: Solidty Lint
       run: solhint 'contracts/**/*.sol'
+
+    - name: Prettify code
+      uses: creyD/[email protected]
+      with:
+        dry: true
+        prettier_plugins: prettier-plugin-solidity
+        prettier_options: --check contracts/**/*.sol
 
     - name: Python lint
       uses: cclauss/[email protected]

.prettierignore

@@ -0,0 +1,5 @@
+**/contracts/contracts/proxy/
+**/contracts/contracts/StakingEscrow.sol
+**/contracts/contracts/NuCypherToken.sol
+**/contracts/test/proxy/
+**/contracts/test/StakingEscrowTestSet.sol

.prettierrc.json

@@ -0,0 +1,4 @@
+{
+	"plugins": ["prettier-plugin-solidity"],
+	"printWidth":100
+}