Add basic cli for telegraf output

Codecov Report

Merging #111 into master will increase coverage by 0.3%. The diff coverage is 100%.

@@            Coverage Diff            @@
##           master     #111     +/-   ##
=========================================
+ Coverage   62.49%   62.79%   +0.3%     
=========================================
  Files         153      155      +2     
  Lines        5935     5986     +51     
=========================================
+ Hits         3709     3759     +50     
- Misses       2226     2227      +1

Impacted Files	Coverage Δ
arkindex/documents/tests/test_telegraf.py	100% <100%> (ø)
arkindex/documents/management/commands/telegraf.py	100% <100%> (ø)
arkindex/documents/models.py	39.32% <0%> (-0.38%)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update f161592...7544e9e. Read the comment docs.

added 3 commits

• 8ceed7c9 - Optimize query for pages with transcriptions
• f84b04c8 - Handle optional tags
• 54ec151d - Add volumes count (total and with transcriptions) by corpus

Compare with previous version

added 1 commit

• ff7c8d85 - Update test

Compare with previous version

added 1 commit

• 7544e9ea - Use a dict for volumes with transcriptions

Compare with previous version

merged

mentioned in commit 5cfc0d4f