Add remote raw rtp reader

[OrlandoCo]

Description

This method will help getting the raw rtp packet from interceptors

Depends on

pion/interceptor#12

[codecov]

Codecov Report

Merging #1582 (3fbbc38) into master (0dea1f9) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1582      +/-   ##
==========================================
- Coverage   74.65%   74.63%   -0.02%     
==========================================
  Files          81       81              
  Lines        5681     5685       +4     
==========================================
+ Hits         4241     4243       +2     
- Misses       1063     1064       +1     
- Partials      377      378       +1     

Flag	Coverage Δ
go	76.17% <100.00%> (-0.03%)	⬇️
wasm	70.42% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
track_remote.go	88.04% <100.00%> (+0.54%)	⬆️
dtlstransport.go	64.82% <0.00%> (-2.02%)	⬇️
peerconnection.go	73.59% <0.00%> (+0.17%)	⬆️

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[Sean-Der]

oh jeez, this is a bigger problem that I understood at first @OrlandoCo! Read completely ignores interceptors?

[OrlandoCo]

oh jeez, this is a bigger problem that I understood at first @OrlandoCo! Read completely ignores interceptors?

Thats why ReadRTP and others methods call Read instead of read, so if the chain is using raw rtp and the user is reading from ReadRTP it may see the same slice and not a new read

[Sean-Der]

Closing for #1595