Allow reconnecting signaling to WebRTC Endpoint

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 50.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 54.71%. Comparing base (cd61526) to head (fe4018c).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #403 +/- ## ========================================== + Coverage 54.43% 54.71% +0.27% ========================================== Files 75 75 Lines 3336 3343 +7 ========================================== + Hits 1816 1829 +13 + Misses 1520 1514 -6 ``` | [Files](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev) | Coverage Δ | | |---|---|---| | [engine/lib/membrane\_rtc\_engine/engine.ex](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?src=pr&el=tree&filepath=engine%2Flib%2Fmembrane_rtc_engine%2Fengine.ex&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev#diff-ZW5naW5lL2xpYi9tZW1icmFuZV9ydGNfZW5naW5lL2VuZ2luZS5leA==) | `82.86% <100.00%> (+2.42%)` | :arrow_up: | | [webrtc/lib/webrtc\_endpoint.ex](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?src=pr&el=tree&filepath=webrtc%2Flib%2Fwebrtc_endpoint.ex&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev#diff-d2VicnRjL2xpYi93ZWJydGNfZW5kcG9pbnQuZXg=) | `0.00% <0.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev). > **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=fishjam-dev) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev). Last update [cd61526...fe4018c](https://app.codecov.io/gh/fishjam-dev/membrane_rtc_engine/pull/403?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=fishjam-dev). 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=fishjam-dev).

[Rados13]

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