[2/N] Fix clang-tidy readability checks (#164652)

This PR applies clang-tidy readability checks to jit sources and all headers in the code base.
`readability-redundant-inline-specifier` is suppressed because it incurs too many changes. `readability-redundant-inline-specifier` is used to detect redundant inline specifiers on function and variable declarations. There are many in-class method definitions that are marked inline.

Pull Request resolved: https://github.com/pytorch/pytorch/pull/164652
Approved by: https://github.com/Skylion007

torch/csrc/jit/frontend/lexer.h

@@ -412,11 +412,7 @@ struct Token {
 
 struct Lexer {
   explicit Lexer(std::shared_ptr<Source> source)
-      : source(std::move(source)),
-
-        indent_stack(),
-        next_tokens(),
-        shared(sharedParserData()) {
+      : source(std::move(source)), shared(sharedParserData()) {
     auto first_indent = lexRaw(true);
     indent_stack.push_back(first_indent.range.size());
     lex();