analysis: ensure Get.name exists in enum

examples/hello.ry

@@ -23,7 +23,7 @@ enum C {
 }
 
 fn test_function() B {
-    return B.bluh;
+    return B.b;
 }
 
 fn multwo(num: i32, double_flag: bool) i32 {

src/types.zig

@@ -255,8 +255,24 @@ pub const TypeSolver = struct {
                     // struct field (on get.name) type and return it
                     .Struct => @panic("TODO analysis of struct"),
 
-                    // TODO check if get.name exists in enum
-                    .Enum => return global_typ,
+                    .Enum => |enum_identifier| {
+                        // fetch an enum off symbol table, then we use the
+                        // identifier map to ensure get.name exists in the enum
+                        var map = ctx.symbol_table.get(enum_identifier).?.value.Enum;
+                        const name = get.name.lexeme;
+
+                        var kv = map.get(name);
+                        if (kv == null) {
+                            self.doError(
+                                "Field {} not found in enum {}",
+                                name,
+                                lexeme,
+                            );
+                            return CompileError.TypeError;
+                        }
+
+                        return global_typ;
+                    },
 
                     else => {
                         std.debug.warn(