Automate AES-NI and AVX detection on runtime, make it default on x86-based systems (#1578)

Rework CPU extensions detection code and build with AES-NI and AVX support by default

.github/workflows/build-osx.yml

@@ -0,0 +1,20 @@
+name: Build on OSX
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    name: With USE_UPNP=${{ matrix.with_upnp }}
+    runs-on: macOS-latest
+    strategy:
+      fail-fast: true
+      matrix:
+        with_upnp: ['yes', 'no']
+    steps:
+    - uses: actions/checkout@v2
+    - name: install packages
+      run: |
+        brew update
+        brew install boost miniupnpc openssl@1.1
+    - name: build application
+      run: make HOMEBREW=1 USE_UPNP=${{ matrix.with_upnp }} PREFIX=$GITHUB_WORKSPACE/output -j3

.github/workflows/build-qt.yml

@@ -1,20 +0,0 @@
-name: Build on Ubuntu
-
-on: [push, pull_request]
-
-jobs:
-  build:
-    name: With QT GUI
-    runs-on: ubuntu-16.04
-    steps:
-    - uses: actions/checkout@v2
-    - name: install packages
-      run: |
-        sudo add-apt-repository ppa:mhier/libboost-latest
-        sudo apt-get update
-        sudo apt-get install build-essential qt5-default libqt5gui5 libboost1.74-dev libminiupnpc-dev libssl-dev zlib1g-dev
-    - name: build application
-      run: |
-        cd qt/i2pd_qt
-        qmake
-        make -j3

.github/workflows/build.yml

@@ -18,4 +18,20 @@ jobs:
         sudo apt-get update
         sudo apt-get install build-essential libboost1.74-dev libminiupnpc-dev libssl-dev zlib1g-dev
     - name: build application
-      run: make USE_AVX=no USE_AESNI=no USE_UPNP=${{ matrix.with_upnp }} -j3
+      run: make USE_UPNP=${{ matrix.with_upnp }} -j3
+
+  build_qt:
+    name: With QT GUI
+    runs-on: ubuntu-16.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: install packages
+      run: |
+        sudo add-apt-repository ppa:mhier/libboost-latest
+        sudo apt-get update
+        sudo apt-get install build-essential qt5-default libqt5gui5 libboost1.74-dev libminiupnpc-dev libssl-dev zlib1g-dev
+    - name: build application
+      run: |
+        cd qt/i2pd_qt
+        qmake
+        make -j3