Use Furigana when looking up words

[RumovZ]

Type:

• bug
• feature
• enhancement
• question

Environment:

• OS: all

I'm going to open a PR to resolve the issue:

• yes
• no, I think...

Description:
The add-on could make use of any existing Furigana to find the right entry in the dictionary. This would be immensely useful in two scenarios:

1. Correct Furigana already exists. Instead of replacing it with autogenerated Furigana, the add-on could keep the existing Furigana and add further information like pitch accent only when the reading of the entry matches.
2. The add-on inserted a wrong reading. This can usually be fixed by the user ad hoc, but the pitch accent information will also be wrong and has to be found with an external tool. If the pitch generation could be run again using the manually adjusted reading, no further tool would be needed.