refs libp2p/rust-libp2p#2712

Refs paritytech/smoldot#1712
Impl libp2p/rust-libp2p#2622

- WebRTC transport is enabled for non-validators and developers by default.
- The transport will generate and store the certificate, which is required for WebRTC identity, in
base dir. In the future, when a new version of `ring` library is released, the certificate will be
deterministically derived from the node's peer ID.

paritytech#12529 (review)

paritytech#12529 (comment)

Co-authored-by: Javier Viola <pepoviola@gmail.com>

```
m": Other(Custom { kind: Other, error: A(Other(A(A(A(A(B(MultiaddrNotSupported("/ip4/10.24.104.30/udp/30333/webrtc/certhash/uEiAvF2IuPZJuKkdb5E-gSM_AmumLi3P5ZR_fvZGPE3vJEA/p2p/12D3KooWQCkBm1BYtkHpocxCwMgR8yjitEeHGx8spzcDLGt2gkBm")))))))) })
```
by changing the ordering of transports

see multiformats/rust-multiaddr#84

This reverts commit 2b37e04.

This reverts commit 62a4658.

see paritytech#12529 (comment)

```
[2023-07-26 09:13:50] error: failed to select a version for `regex`.
[2023-07-26 09:13:50]     ... required by package `webrtc v0.8.0`
[2023-07-26 09:13:50]     ... which satisfies dependency `webrtc = "^0.8.0"` of package `libp2p-webrtc v0.6.0-alpha`
[2023-07-26 09:13:50]     ... which satisfies dependency `libp2p-webrtc = "^0.6.0-alpha"` of package `sc-network v0.10.0-dev (/builds/parity/mirrors/substrate/client/network)`
[2023-07-26 09:13:50]     ... which satisfies git dependency `sc-network` (locked to 0.10.0-dev) of package `polkadot-availability-distribution v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot/node/network/availability-distribution)`
[2023-07-26 09:13:50]     ... which satisfies path dependency `polkadot-availability-distribution` (locked to 0.9.43) of package `polkadot-service v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot/node/service)`
[2023-07-26 09:13:50]     ... which satisfies path dependency `service` (locked to 0.9.43) of package `polkadot-cli v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot/cli)`
[2023-07-26 09:13:50]     ... which satisfies path dependency `polkadot-cli` (locked to 0.9.43) of package `polkadot v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot)`
[2023-07-26 09:13:50] versions that meet the requirements `^1.7.1` are: 1.9.1, 1.9.0, 1.8.4, 1.8.3, 1.8.2, 1.8.1, 1.8.0, 1.7.3, 1.7.2, 1.7.1
[2023-07-26 09:13:50]
[2023-07-26 09:13:50] all possible versions conflict with previously selected packages.
[2023-07-26 09:13:50]
[2023-07-26 09:13:50]   previously selected package `regex v1.6.0`
[2023-07-26 09:13:50]     ... which satisfies dependency `regex = "^1.1"` (locked to 1.6.0) of package `Inflector v0.11.4`
[2023-07-26 09:13:50]     ... which satisfies dependency `Inflector = "^0.11.4"` (locked to 0.11.4) of package `frame-benchmarking-cli v4.0.0-dev (/builds/parity/mirrors/substrate/utils/frame/benchmarking-cli)`
[2023-07-26 09:13:50]     ... which satisfies git dependency `frame-benchmarking-cli` (locked to 4.0.0-dev) of package `polkadot-cli v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot/cli)`
[2023-07-26 09:13:50]     ... which satisfies path dependency `polkadot-cli` (locked to 0.9.43) of package `polkadot v0.9.43 (/builds/parity/mirrors/substrate/companions/polkadot)`
[2023-07-26 09:13:50]
[2023-07-26 09:13:50] failed to select a version for `regex` which could resolve this conflict
```

refs paritytech#12529

This reverts commit 142b884.

This reverts commit 7d4e8e2.