feat(library): exclude configured folders from scanning and analysis

packages/i18n/locales/en/errors.json

@@ -42,6 +42,7 @@
     "pattern_invalid": "Pattern error: {{reason}}",
     "nfs_invalid": "Invalid value",
     "local_path_invalid": "Folder not found",
+    "excluded_dirs_invalid": "Enter up to 100 folders: relative paths without .., one per line (up to 1000 characters).",
     "name_invalid": "The name must be 1 to {{max}} characters",
     "scan_interval_invalid": "The interval must be at least {{min}} minutes",
     "source_type_invalid": "Unknown storage type",