Tweak clang-tidy rules

Turn off modernize-use-trailing-return because it's *really* annoying
(and clangd picks it up when using it for editing).

Turn off modernize-use-nodiscard as well because it's already annoying.

Add bugprone-* as well because it includes a lot of useful checks.

.clang-tidy

@@ -1,2 +1,2 @@
 HeaderFilterRegex: 'llarp/.*'
-Checks: 'readability-else-after-return,clang-analyzer-core-*,modernize-*'
+Checks: 'readability-else-after-return,clang-analyzer-core-*,modernize-*,-modernize-use-trailing-return-type,-modernize-use-nodiscard,bugprone-*'