Add AV1 to the list of default video codecs

[mickel8]

see https://github.com/elixir-webrtc/ex_webrtc/issues/28#issuecomment-1845862824

[codecov[bot]]

Codecov Report

Merging #33 (6110159) into master (2fb14b4) will decrease coverage by 0.18%. Report is 1 commits behind head on master. The diff coverage is 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #33 +/- ## ========================================== - Coverage 84.43% 84.25% -0.18% ========================================== Files 12 12 Lines 559 559 ========================================== - Hits 472 471 -1 - Misses 87 88 +1 ``` | [Files](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc) | Coverage Δ | | |---|---|---| | [lib/ex\_webrtc/peer\_connection/configuration.ex](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc#diff-bGliL2V4X3dlYnJ0Yy9wZWVyX2Nvbm5lY3Rpb24vY29uZmlndXJhdGlvbi5leA==) | `82.35% <ø> (ø)` | | | [lib/ex\_webrtc/rtp\_codec\_parameters.ex](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc#diff-bGliL2V4X3dlYnJ0Yy9ydHBfY29kZWNfcGFyYW1ldGVycy5leA==) | `100.00% <ø> (ø)` | | | [lib/ex\_webrtc/sdp\_utils.ex](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc#diff-bGliL2V4X3dlYnJ0Yy9zZHBfdXRpbHMuZXg=) | `86.66% <100.00%> (ø)` | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc). Last update [d310708...6110159](https://app.codecov.io/gh/elixir-webrtc/ex_webrtc/pull/33?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=elixir-webrtc).