Add error logging and corresponding tests for parser syntax errors

v0/tests/bad_import_name.txt

@@ -0,0 +1,4 @@
+--- test.c ---
+1| module my_module; import ;
+                            ^
+   expected module name to import

v0/tests/bad_module_log.txt

@@ -1,4 +0,0 @@
---- test.c ---
-1| import other_module.c
-   ^^^^^^
-   expected `module`

v0/tests/bad_module_name.txt

@@ -0,0 +1,4 @@
+--- test.c ---
+1| import other_module;
+   ^^^^^^
+   expected 'module' keyword

v0/tests/missing_semicolon_import.txt

@@ -0,0 +1,4 @@
+--- test.c ---
+1| module my_module; import other_module
+                                        ^
+   expected ';' after import

v0/tests/missing_semicolon_module.txt

@@ -0,0 +1,4 @@
+--- test.c ---
+1| module my_module
+                   ^
+   expected ';' after module name