Add tmt testcase for CI

.fmf/version

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+1

plans/graphite2.fmf

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+summary: Basic smoke test
+discover:
+    how: fmf
+execute:
+    how: tmt

tests/main.fmf

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+test: ./runtests.sh
+duration: 10m
+framework: beakerlib
+require:
+  - graphite2
+  - cmake
+  - make
+  - python3-fonttools
+  - rpm-build
+  - gcc
+  - gcc-c++
+  - freetype-devel

tests/runtests.sh

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+#!/bin/bash
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+NAME=graphite2
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlAssertRpm ${NAME}
+        rlShowPackageVersion ${NAME}
+        rlRun -t -l "VERSION=$(rpm -q ${NAME} --queryformat='%{version}')" 0 "Get VERSION"
+        rlRun "tmp=\$(mktemp -d)" 0 "Create tmp directory"
+        rlRun "pushd $tmp"
+        rlFetchSrcForInstalled "${NAME}"
+        rlRun "rpm --define '_topdir $tmp' -i *src.rpm"
+        rlRun -t -l "mkdir BUILD" 0 "Creating BUILD directory"
+        rlRun -t -l "rpmbuild --noclean --nodeps --define '_topdir $tmp' -bp $tmp/SPECS/*spec"
+        if [ -d BUILD/${NAME}-${VERSION}-build ]; then
+            rlRun -t -l "pushd BUILD/${NAME}-${VERSION}-build/${NAME}-${VERSION}"
+        else
+            rlRun -t -l "pushd BUILD/${NAME}-${VERSION}"
+        fi
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun "set -o pipefail"
+        rlRun "cmake -DCMAKE_BUILD_TYPE=Release -S . -B build"
+        rlRun "cmake --build build"
+        rlRun "pushd build"
+        rlRun "ctest"
+        rlRun "retval=$?"
+        rlRun "echo $retval"
+        rlRun "popd"
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        rlRun "popd"
+        rlRun "rm -r $tmp" 0 "Remove tmp directory"
+    rlPhaseEnd
+rlJournalEnd
+