Break tools out into their own dirs

tools/xfmt/BUILD

@@ -0,0 +1,9 @@
+py_binary(
+    name = "xfmt",
+    main = "__main__.py",
+    deps = [
+        py_requirement("beautifulsoup4"),
+        py_requirement("click"),
+        py_requirement("lxml"),
+    ]
+)

tools/xfmt/__main__.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+"""
+A quick and dirty XML formatter.
+"""
+
+from bs4 import BeautifulSoup
+import click
+
+
+@click.command()
+@click.argument("filename")
+def main(filename):
+    with open(filename) as f:
+        bs = BeautifulSoup(f, "xml")
+
+    with open(filename, "w") as of:
+        of.write(bs.prettify())
+        of.write("\n")
+
+    print(f"Formatted {filename}!")
+
+
+if __name__ == "__main__":
+    main()