Lagom: Add two-stage build for Fuzzers to enable fuzzing generated code

This allows us to fuzz the generated unicode and timezone database
helpers, and to fuzz things like LibJS using Fuzzilli to get proper
coverage of our unicode handling code.

Update the Azure CI to use the new two-stage build as well, and cleanup
some unused CMake options there.

Meta/Azure/Lagom.yml

@@ -43,42 +43,38 @@ jobs:
         ${{ if eq(parameters.fuzzer, 'NoFuzz') }}:
           with_remote_data_caches: true
 
-    - script: |
-        mkdir -p Meta/Lagom/Build
-      displayName: 'Create Build Directory'
-
     - ${{ if eq(parameters.fuzzer, 'Fuzz') }}:
       - script: |
-          cmake -GNinja \
+          cmake -GNinja -B tools-build \
+              -DBUILD_LAGOM=OFF \
+              -DENABLE_LAGOM_CCACHE=ON \
+              -DCMAKE_INSTALL_PREFIX=tool-install
+          ninja -C tools-build install
+          cmake -GNinja -B Build \
             -DBUILD_LAGOM=ON \
             -DENABLE_LAGOM_CCACHE=ON \
             -DENABLE_FUZZER_SANITIZER=ON \
             -DENABLE_ADDRESS_SANITIZER=ON \
-            -DENABLE_PCI_IDS_DOWNLOAD=OFF \
-            -DENABLE_USB_IDS_DOWNLOAD=OFF \
             -DCMAKE_C_COMPILER=clang \
             -DCMAKE_CXX_COMPILER=clang++ \
-            ..
+            -DCMAKE_PREFIX_PATH=tool-install
         displayName: 'Create Build Environment'
-        workingDirectory: $(Build.SourcesDirectory)/Meta/Lagom/Build
+        workingDirectory: $(Build.SourcesDirectory)/Meta/Lagom
         env:
           CCACHE_DIR: '$(SERENITY_CCACHE_DIR)'
     - ${{ if eq(parameters.fuzzer, 'NoFuzz') }}:
       - script: |
-          cmake -GNinja \
+          cmake -GNinja -B Build \
             -DBUILD_LAGOM=ON \
             -DENABLE_LAGOM_CCACHE=ON \
             -DINCLUDE_WASM_SPEC_TESTS=ON \
             -DWASM_SPEC_TEST_SKIP_FORMATTING=ON \
             -DENABLE_UNDEFINED_SANITIZER=ON \
             -DENABLE_ADDRESS_SANITIZER=ON \
-            -DENABLE_PCI_IDS_DOWNLOAD=OFF \
-            -DENABLE_USB_IDS_DOWNLOAD=OFF \
             -DCMAKE_C_COMPILER=gcc-11 \
-            -DCMAKE_CXX_COMPILER=g++-11 \
-            ..
+            -DCMAKE_CXX_COMPILER=g++-11
         displayName: 'Create Build Environment'
-        workingDirectory: $(Build.SourcesDirectory)/Meta/Lagom/Build
+        workingDirectory: $(Build.SourcesDirectory)/Meta/Lagom
         env:
           PATH: '$(PATH):$(Build.SourcesDirectory)/wabt-1.0.23/bin'
           CCACHE_DIR: '$(SERENITY_CCACHE_DIR)'