Fixed naming to match ZIM naming conventions.

[josephlewis42]

Adds a flag for file names and two new placeholders to format names in a way that is expected for ZIMFarm produced ZIMs.

Fixes #15

Example run showing the new names:

$ devdocs2zim --output /tmp/devdocs/ --slug lua~5.4 --debug
[devdocs2zim::2024-09-19 09:05:19,601] DEBUG:Fetching https://devdocs.io/docs.json
[devdocs2zim::2024-09-19 09:05:20,323] INFO:Fetching common CSS...
[devdocs2zim::2024-09-19 09:05:20,323] DEBUG:Fetching https://devdocs.io/application.css
[devdocs2zim::2024-09-19 09:05:20,755] DEBUG:  Found app CSS with 111511 chars.
[devdocs2zim::2024-09-19 09:05:20,756] INFO:Generating ZIM for lua~5.4
[devdocs2zim::2024-09-19 09:05:20,757] INFO:  Writing to: /tmp/devdocs/devdocs.io_en_lua-5.4_2024-09.zim

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.70%. Comparing base (653029f) to head (a7b7e5d).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #26      +/-   ##
==========================================
+ Coverage   92.61%   92.70%   +0.08%     
==========================================
  Files           4        4              
  Lines         325      329       +4     
  Branches       44       44              
==========================================
+ Hits          301      305       +4     
  Misses         22       22              
  Partials        2        2              

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[benoit74]

LGTM, only one small typo. Good job.

Please amend your commit and force push, no need to have two commits. I will merge right after.

[benoit74]

LGTM