ruff: Enable PERF by default, disable PERF203 for now

Which is about try/except in loops. There are preformance issues with
this, but it's also a good improvement to have this.

.ruff.toml

@@ -2,7 +2,10 @@ line-length = 100
 target-version = "py310"
 
 [lint]
-  select = ["F", "PERF102", "PERF401", "PERF402"]
+  select = ["F", "PERF"]
+  ignore = [
+    "PERF203",  # This is is a good idea, but a significant amount of work.
+  ]
 
 [lint.per-file-ignores]
   "mesonbuild/mesonlib.py" = ["F403"]