add support for ios simulator (#111)

* add support for ios simulator

* remove libmd.tbd dependency

.github/workflows/full_check.yaml

@@ -289,9 +289,14 @@ jobs:
           path: |
             contrib/depends/built/*
           key: depends-${{ github.job }}-${{ hashFiles('contrib/depends/packages/*.mk') }}
-      - name: build
+      - name: build (aarch64-apple-ios)
         run: |
           ./build_single.sh ${{ matrix.coin }} aarch64-apple-ios -j$(sysctl -n hw.logicalcpu)
+
+      - name: build (aarch64-apple-iossimulator)
+        run: |
+          ./build_single.sh ${{ matrix.coin }} aarch64-apple-iossimulator -j$(sysctl -n hw.logicalcpu)
+
       - name: rename artifacts
         run: |
           mkdir release/gh/