add berlin to solidity settings

apps/remix-ide/src/app/tabs/compileTab/compilerContainer.js

@@ -225,6 +225,7 @@ class CompilerContainer {
     this._view.evmVersionSelector = yo`
       <select onchange="${() => this.onchangeEvmVersion()}" class="custom-select" id="evmVersionSelector">
         <option value="default" selected="selected">compiler default</option>
+        <option>berlin</option>
         <option>muirGlacier</option>
         <option>istanbul</option>
         <option>petersburg</option>