Add parsing of dot operator

Signed-off-by: Marcel Müller <neikos@neikos.email>

src/parser/snapshots/nomo__parser__tests__check_access_operator.snap

@@ -0,0 +1,21 @@
+---
+source: src/parser/mod.rs
+expression: ast
+---
+TemplateAst {
+    root: [
+        Interpolation {
+            prev_whitespace_content: None,
+            expression: Operation {
+                op: Dot,
+                lhs: ConditionalAccess(
+                    [Ident]"foo" (4..7),
+                ),
+                rhs: VariableAccess(
+                    [Ident]"bar" (9..12),
+                ),
+            },
+            post_whitespace_content: None,
+        },
+    ],
+}