It was a workaround for pre-C++17 std::string which didn't support
passing a string_view to various functions/operators. There's only one
place left that needs an explicit conversion, and that's where it is
used as a map key; so just be explicit there and remove llarp::str()
everywhere else.
This is an initial pass at doing explicit value checks when handling
config parsing, as opposed to using a visiting pattern. The latter
made it difficult to check for conditions such as missing required
values, multiple values, etc.
It was also generally less readable (think declarative) which further
made it difficult to get a grasp for what our actual configuration file
requirements were.
This commit reflects changes to clang-format rules. Unfortunately,
these rule changes create a massive change to the codebase, which
causes an apparent rewrite of git history.
Git blame's --ignore-rev flag can be used to ignore this commit when
attempting to `git blame` some code.
string_view was implicitly convertible to std::string, but
std::string_view is only explicitly convertible. This makes the
`operator std::string` explicit to be more compatible, and re-adds a
bunch of explicit string casts to the code where needed.
(This also fixes the build if changing the standard to c++17)
