[perflint] Add PERF401 and PERF402 rules (#5298)

## Summary

Adds `PERF401` and `PERF402` mirroring `W8401` and `W8402` from
https://github.com/tonybaloney/perflint

Implementation is not super smart but should be at parity with upstream
implementation judging by:
c07391c176/perflint/comprehension_checker.py (L42-L73)

It essentially checks:

- If the body of a for-loop is just one statement
- If that statement is an `if` and the if-statement contains a call to
`append()` we flag `PERF401` and suggest a list comprehension
- If that statement is a plain call to `append()` or `insert()` we flag
`PERF402` and suggest `list()` or `list.copy()`

I've set the violation to only flag the first append call in a long
`if-else` statement for `PERF401`. Happy to change this to some other
location or make it multiple violations if that makes more sense.

## Test Plan

Fixtures were added with the relevant scenarios for both rules

## Issue Links

Refers: https://github.com/astral-sh/ruff/issues/4789

scripts/check_docs_formatted.py

@@ -186,10 +186,7 @@ def main(argv: Sequence[str] | None = None) -> int:
         generate_docs()
 
     # Get static docs
-    static_docs = []
-    for file in os.listdir("docs"):
-        if file.endswith(".md"):
-            static_docs.append(Path("docs") / file)
+    static_docs = [Path("docs") / f for f in os.listdir("docs") if f.endswith(".md")]
 
     # Check rules generated
     if not Path("docs/rules").exists():
@@ -197,10 +194,9 @@ def main(argv: Sequence[str] | None = None) -> int:
         return 1
 
     # Get generated rules
-    generated_docs = []
-    for file in os.listdir("docs/rules"):
-        if file.endswith(".md"):
-            generated_docs.append(Path("docs/rules") / file)
+    generated_docs = [
+        Path("docs/rules") / f for f in os.listdir("docs/rules") if f.endswith(".md")
+    ]
 
     if len(generated_docs) == 0:
         print("Please generate rules first.")

scripts/update_ambiguous_characters.py

@@ -45,9 +45,7 @@ def format_confusables_rs(raw_data: dict[str, list[int]]) -> str:
         for i in range(0, len(items), 2):
             flattened_items.add((items[i], items[i + 1]))
 
-    tuples = []
-    for left, right in sorted(flattened_items):
-        tuples.append(f"    {left}u32 => {right},\n")
+    tuples = [f"    {left}u32 => {right},\n" for left, right in sorted(flattened_items)]
 
     print(f"{len(tuples)} confusable tuples.")