Add gating and simple unit test wrapper

.fmf/version

@@ -0,0 +1 @@
+1

gating.yaml

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+--- !Policy
+product_versions:
+  - rhel-10
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plans/main.fmf

@@ -0,0 +1,8 @@
+execute:
+    how: tmt
+
+discover:
+    dist-git-source: true
+    dist-git-merge: true
+    how: fmf
+    dist-git-install-builddeps: true

tests/unit.fmf

@@ -0,0 +1,20 @@
+test: |
+    cd $(dirname $TMT_SOURCE_DIR/kramdown*/test)
+    export LANG=C.UTF-8
+
+    # Only on RHEL like (see %check in .spec)
+    # Avoid unwanted stringex dependency
+    sed -i test/testcases/block/04_header/with_auto_ids.options \
+       -e '\@transliterated_header_ids@s|true|false|'
+    sed -i \
+       test/testcases/block/04_header/with_auto_ids.* \
+       -e '\@[Tr]ransliterated@d'
+
+    sed -i.skip test/test_files.rb \
+        -e "\@EXCLUDE_LATEX_FILES =@s|^\(.*\)$|\1 'test/testcases/block/04_header/with_auto_ids.text', #texlive 2022|"
+        
+    ruby -e 'Dir.glob "./test/test_*.rb", &method(:require)'
+require:
+- rubygem-kramdown
+tag:
+- rhel-buildroot