bluetooth: Add some EIR fields

[antoniovazquezblanco]

Checklist:

• [x] If you are new to Scapy: I have checked CONTRIBUTING.md (esp. section submitting-pull-requests)
• [x] I squashed commits belonging together
• [x] I added unit tests or explained why they are not relevant
• [x] I executed the regression tests (using cd test && ./run_tests or tox)
• [x] If the PR is still not finished, please create a Draft Pull Request

Bluetooth EIR packets.

Added few tests as I could not find data samples that I could share. I will try to collect some real world examples I can put there.

[codecov[bot]]

Codecov Report

Merging #4273 (e95d088) into master (0a2b2bc) will increase coverage by 0.01%. The diff coverage is 95.23%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4273      +/-   ##
==========================================
+ Coverage   82.03%   82.04%   +0.01%     
==========================================
  Files         350      350              
  Lines       82888    82929      +41     
==========================================
+ Hits        67994    68036      +42     
+ Misses      14894    14893       -1     

Files	Coverage Δ
scapy/fields.py	92.39% <100.00%> (ø)
scapy/layers/bluetooth.py	89.81% <95.12%> (+0.21%)	:arrow_up:

... and 4 files with indirect coverage changes

[antoniovazquezblanco]

As said previously, it is not easy to find those fields out in the wild to test this as acuratelly as possible...

I will add tests as soon as I come across a packet for the missing packets. For the time being I would like to merge the tested packets if possible. I can remove the untested packets from the PR if you wish so...

Thanks!

[antoniovazquezblanco]

Would you prefer that I delete the non-tested packets or to leave them? Thanks