Retrieve metadata for videos

[rhhayward]

Description:

I have a micro-service which I have been using to get blink camera armed and battery status. I'd like to add to that micro-service the ability to 1. list videos, and 2. download videos. I checked, and download_videos had the components I was looking for, but they were all wrapped up together. With this PR I'm breaking out two methods: 1. get_videos_metadata, and 2. do_http_get. The download_videos now consists of 1. forcing camera into a list, a call to get_videos_metadata, and then calling the download parser. The download parser was only modified to call do_http_get instead of downloading directly, and moving the calculation of clip_address into do_http_get.

Related issue (if applicable): N/A

Checklist:

• Local tests with tox run successfully PR cannot be meged unless tests pass

➜  blinkpy git:(videos-metadata) ✗ python -m tox -e py38          
...
Results (0.79s):
     107 passed
  py38: OK (1.22=setup[0.07]+cmd[1.15] seconds)
  congratulations :) (1.32 seconds)

• Changes tested locally to ensure platform still works as intended

### I changed download dir in blinkapp.py to /tmp for my local testing
➜  blinkpy git:(videos-metadata) ✗ python3 -m pip install ./ && CREDFILE=./creds.json python3 blinkapp/blinkapp.py                      
...
➜  blinkpy git:(videos-metadata) ✗ ls -al /tmp/*.mp4  
-rw-rw-r-- 1 rhh rhh  158028 Feb  4 16:18 /tmp/front-door-2023-02-02t20-30-53-00-00.mp4
-rw-rw-r-- 1 rhh rhh  935551 Feb  4 16:18 /tmp/front-door-2023-02-02t23-32-10-00-00.mp4
...
-rw-rw-r-- 1 rhh rhh  456354 Feb  4 16:17 /tmp/garage-ext-2023-02-04t15-01-36-00-00.mp4
-rw-rw-r-- 1 rhh rhh  976975 Feb  4 16:17 /tmp/garage-ext-2023-02-04t15-31-06-00-00.mp4

• Tests added to verify new code works

[codecov]

Codecov Report

Merging #685 (d50d4d6) into dev (0b5b4cb) will increase coverage by 0.08%.
The diff coverage is 91.66%.

@@            Coverage Diff             @@
##              dev     #685      +/-   ##
==========================================
+ Coverage   84.23%   84.31%   +0.08%     
==========================================
  Files           8        8              
  Lines        1364     1371       +7     
==========================================
+ Hits         1149     1156       +7     
  Misses        215      215              

Flag	Coverage Δ
unittests	84.31% <91.66%> (+0.08%)	⬆️

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

Impacted Files	Coverage Δ
blinkpy/blinkpy.py	84.49% <91.66%> (+0.43%)	⬆️

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[fronzbot]

LGTM, thanks!

[rhhayward]

Thanks!