ci: skip long tests to speed up CI

This adds an `is-bottleneck` matrix flag for the following
configurations:

- Any compiler with MSan
- Apple Clang + ASan
- Apple Clang + UBSan

and, for these entries, skips the AsciiDoc/HTML golden tests and
self-doc test while still running all the other tests.

This reduces the wall-clock time of the overall CI run by removing the
heaviest tests.

Author: gennaroprota

.github/workflows/ci.yml

@@ -93,6 +93,7 @@ jobs:
             mrdocs-ccflags: {{{ common-ccflags }}} {{{ mrdocs-flags }}}
             mrdocs-package-generators: {{#if (ieq os 'windows') }}7Z ZIP WIX{{else}}TGZ TXZ{{/if}}
             mrdocs-release-package-artifact: release-packages-{{{ lowercase os }}}
+            is-bottleneck: {{#if (or msan (and (ieq compiler 'apple-clang') (or asan ubsan))) }}true{{/if}}
           output-file: matrix.json
           trace-commands: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -599,6 +600,7 @@ jobs:
           install-prefix: .local
           extra-args: |
             -D MRDOCS_BUILD_DOCS=OFF
+            -D MRDOCS_BUILD_TESTS=ON
             -D CMAKE_EXE_LINKER_FLAGS="${{ steps.rmatrix.outputs.common-ldflags }}"
             -D LLVM_ROOT="${{ steps.rmatrix.outputs.llvm-path }}"
             -D jerryscript_ROOT="${{ steps.rmatrix.outputs.third-party-dir }}/jerryscript/install"
@@ -609,14 +611,20 @@ jobs:
             -D boost_describe_ROOT="${{ steps.rmatrix.outputs.third-party-dir }}/boost_describe/install"
             ${{ runner.os == 'Windows' && '-D LibXml2_ROOT=../third-party/libxml2/install' || '' }}
           export-compile-commands: true
-          run-tests: true
+          run-tests: ${{ !matrix.is-bottleneck }}
+          configure-tests-flag: ${{ matrix.is-bottleneck && 'MRDOCS_RUN_ALL_TESTS' || 'BUILD_TESTING' }}
           install: true
           package: ${{ matrix.is-main }}
           package-dir: packages
           package-generators: ${{ matrix.mrdocs-package-generators }}
           package-artifact: false
           ctest-timeout: 9000
 
+      - name: Reduced Tests (for CI Bottleneck Configs)
+        if: matrix.is-bottleneck
+        working-directory: build
+        run: |
+          ctest --output-on-failure --timeout 9000 --exclude-regex "mrdocs-golden-tests-(html|adoc)|mrdocs-self-doc"
       - name: Check YAML schema
         run: |
           # Find python