implement font and text direction; call std and mock directly instead of importing

src/text.rs

@@ -0,0 +1,27 @@
+#[derive(Debug, Eq, PartialEq)]
+pub enum Font {
+    AsciiSmall, // default - does not appear in game data
+    UnicodeEuropeanSmall,
+    UnicodeEuropeanLarge,
+    UnicodeAsian,
+    Arabic,
+    Custom,
+}
+
+impl Font {
+    pub(crate) fn from(str: &str) -> Font {
+        match str {
+            "unicode_european_small" => Font::UnicodeEuropeanSmall,
+            "unicode_european_large" => Font::UnicodeEuropeanLarge,
+            "unicode_asian" => Font::UnicodeAsian,
+            "arabic" => Font::Arabic,
+            _ => Font::Custom,
+        }
+    }
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub enum TextDirection {
+    LeftToRight, // default
+    RightToLeft,
+}