feat: add manual input for plan

[codecov-commenter]

Codecov Report

Merging #40 (95b7d8c) into dev (24ba338) will decrease coverage by 0.22%. The diff coverage is 85.71%.

@@            Coverage Diff             @@
##              dev      #40      +/-   ##
==========================================
- Coverage   94.83%   94.61%   -0.23%     
==========================================
  Files           5        5              
  Lines         329      334       +5     
==========================================
+ Hits          312      316       +4     
- Misses         17       18       +1     

Impacted Files	Coverage Δ
custom_components/openei/config_flow.py	95.27% <0.00%> (-0.65%)	:arrow_down:
custom_components/openei/__init__.py	88.54% <100.00%> (+0.36%)	:arrow_up:
custom_components/openei/const.py	100.00% <100.00%> (ø)

[github-actions[bot]]

🎉 HACS repository validator action summary 🎉 ✅ The repository is not archived ✅ manifest.json file exist ✅ All required keys are present in manifest.json ✅ hacs.json has the 'name' key set ✅ The repository has a description ✅ openei is added to https://github.com/home-assistant/brands NICE! ✅ The repository has topics ✅ The repository has issues enabled ✅ This day ends with an 'y' (Saturday) ✅ info.md exists ✅ Requirements validation ✅ Python wheels ✅ HACS load check