Rename /webrtc to /webrtc-direct

[tomaka]

Close #275

[github-actions]

twiggy diff report

Difference in .wasm size before and after this pull request.

---

 Delta Bytes │ Item
─────────────┼─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
       -2246 ┊ smoldot::libp2p::multiaddr::ProtocolRef::from_str_parts::h7699ee4cef1e5b0f
       +2246 ┊ smoldot::libp2p::multiaddr::ProtocolRef::from_str_parts::ha2462cda2860655e
       -1636 ┊ <F as nom::internal::Parser<I,O,E>>::parse::h22ad75248a1b4138
       +1636 ┊ <F as nom::internal::Parser<I,O,E>>::parse::h35218c79c8bac1f6
       -1508 ┊ <smoldot::libp2p::multiaddr::ProtocolRef as core::fmt::Display>::fmt::h6cc708f9428bf6f4
       +1508 ┊ <smoldot::libp2p::multiaddr::ProtocolRef as core::fmt::Display>::fmt::h7bf968400fe22329
       +1097 ┊ smoldot::libp2p::multiaddr::ProtocolRef::as_bytes::h2869e7a9a6c77056
       -1097 ┊ smoldot::libp2p::multiaddr::ProtocolRef::as_bytes::hc1cef7b46eeb829f
        +383 ┊ <&mut nom::combinator::ParserIterator<Input,Error,F> as core::iter::traits::iterator::Iterator>::next::h7e4d7739159bf4ad
        -383 ┊ <&mut nom::combinator::ParserIterator<Input,Error,F> as core::iter::traits::iterator::Iterator>::next::hd8c6438964f0a852
        -329 ┊ <&mut nom::combinator::ParserIterator<Input,Error,F> as core::iter::traits::iterator::Iterator>::next::h2642e520a6675a31
        +329 ┊ <&mut nom::combinator::ParserIterator<Input,Error,F> as core::iter::traits::iterator::Iterator>::next::ha83351b95ddf0702
        -325 ┊ <F as nom::internal::Parser<I,O,E>>::parse::ha5f3e3becb30a98e
        +325 ┊ <F as nom::internal::Parser<I,O,E>>::parse::haae8b4b1040f5948
        +294 ┊ core::iter::traits::iterator::Iterator::last::h685a3e9961cea58e
        -294 ┊ core::iter::traits::iterator::Iterator::last::hd171b241f9518756
        -157 ┊ smoldot::libp2p::multiaddr::protocol::h921e02ee9c9f3afa
        +157 ┊ smoldot::libp2p::multiaddr::protocol::hb1a56ba037da8beb
         -58 ┊ core::ptr::drop_in_place<smoldot::libp2p::multiaddr::ProtocolRef>::h1327a7092eced760
         -58 ┊ core::ptr::drop_in_place<smoldot::libp2p::multiaddr::ProtocolRef>::hc9dff2c05bd3c0de
        +132 ┊ ... and 5 more.
         +16 ┊ Σ [25 Total Rows]