Scaffold bggpipe: typer CLI, config loading, title normalization

uv project with typer/httpx/rapidfuzz, ruff and pytest wired into
pyproject. Six stub subcommands matching the pipeline stages, config.toml
plus BGG_USERNAME env override, accent/ampersand/article-safe title
normalization with tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

config.toml

@@ -0,0 +1,11 @@
+# Non-secret configuration for bggpipe. Secrets (ANTHROPIC_API_KEY,
+# BGG_PASSWORD) come from env vars only and must never appear here.
+
+# TODO(eric): set your BGG username — the live smoke test and diff/upload
+# stages need it. Leave empty to skip the live smoke test.
+bgg_username = ""
+
+photos_dir = "photos"
+data_dir = "data"
+model = "claude-sonnet-5"
+rate_limit_seconds = 2.0