[DO-973] harfbuzz package (!10)

Co-authored-by: aleksandr.vodyanov <aleksandr.vodyanov@avroid.tech>
Reviewed-on: https://git.avroid.tech/Conan/conan_build/pulls/10

recipes/m4/all/test_package/conanfile.py

@@ -0,0 +1,14 @@
+from conan import ConanFile
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "VirtualBuildEnv"
+    test_type = "explicit"
+
+    def build_requirements(self):
+        self.tool_requires(self.tested_reference_str)
+
+    def test(self):
+        extension = ".exe" if self.settings.os == "Windows" else ""
+        self.run(f"m4{extension} --version")