Add test suite stub

tests/TF_HEADER

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+#!/bin/sh
+
+echo -n "version: ";
+saturnin --version-semver

tests/cli/TF_RUN

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+#!/bin/bash
+
+. $TF_DIR/include/subtest.sh
+. $TF_DIR/include/tools.sh
+
+tf_enum_subtests() {
+    echo usage
+}
+
+tf_name2cmd() {
+    local name=$1
+    local cmd
+    local o_err="oracle/$name.stderr"
+    local o_es=0
+    case $name in
+        usage)       cmd="saturnin"; o_es=2 ;;
+    esac
+    echo "tf_testflt -n $name -E $o_err -S $o_es $cmd"
+}
+
+tf_do_subtests

tests/cli/oracle/basic.stdout

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+Linda and Nina work together.
+The mask *.* matches all.
+The mask *.docx matches Word documents.

tests/cli/oracle/extended.stdout

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+Alice uses Google.
+Bob wears goggles.
+Linda and Nina work together.

tests/cli/oracle/fixed.stdout

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+The mask *.* matches all.

tests/cli/oracle/usage.stderr

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+usage: saturnin [-d|-v] command [args...]
+usage: saturnin help
+usage: saturnin --version

tests/cli/test/ALL.stdin

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+Alice uses Google.
+Bob wears goggles.
+Joe and John are friends.
+Linda and Nina work together.
+The mask *.* matches all.
+The mask *.docx matches Word documents.