Declare dependency on libogg

conanfile.py

@@ -12,6 +12,7 @@ class LibFlacConan(ConanFile):
                    "but lossless, meaning that audio is compressed in FLAC without any loss in quality.")
     homepage = "https://xiph.org/flac/"
     topics = ("media", "audio", "lossless", "xiph.org")
+    requires = [("libogg/1.3.4@darkmorford/stable", "private")]
     settings = "os", "compiler", "build_type", "arch"
     options = {"shared": [True, False], "fPIC": [True, False]}
     default_options = {"shared": True, "fPIC": True}