Update URLs and add import tests for vt package

Updated the URL keys in pyproject.toml for better clarity by changing 'repository' to 'source' and adding a 'homepage' entry
 Added 'vt' to import tests in meta.yaml to ensure the package can be successfully imported during testing.

pkg/recipe/meta.yaml

@@ -48,6 +48,8 @@ requirements:
     - tqdm
 
 test:
+  imports:
+    - vt
   requires:
     - pytest
   source_files:

pyproject.toml

@@ -37,8 +37,9 @@ classifiers = [
 ]
 
 [project.urls]
+homepage = "https://gitlab.inria.fr/morpheme/vt-python"
 documentation = "https://morpheme.gitlabpages.inria.fr/vt-python/"
-repository = "https://gitlab.inria.fr/morpheme/vt-python"
+source = "https://gitlab.inria.fr/morpheme/vt-python"
 
 [project.optional-dependencies]
 test = [