[Sprite] Implement female icon assets

[chaosgrimmon]

What are the changes the user will see?

Certain Pokemon with significant gender differences will now have those changes reflected in their icons.

Why am I making these changes?

Should've been done when those variants were implemented.

What are the changes from a developer perspective?

Added some more lines to the list of female icons in pokemon-species.ts. As a result, had to add the now-expected female icons to the affected non-variant iconsheets. (The female variant icons had been updated in the last variant cycle.)
To futureproof, those female icons were also added to the folders of icons used to compile iconsheets. (Doduo and Dodrio's female non-variant icons were already in the Gen1 folder.)

Screenshots/Videos

Before

After

How to test the changes?

Use overrides to generate the relevant Pokemon.

Checklist

• I'm using beta as my base branch
• There is no overlap with another PR?
• The PR is self-contained and cannot be split into smaller PRs?
• Have I provided a clear explanation of the changes?
  - [] Have I considered writing automated tests for the issue?
  - [] If I have text, did I make it translatable and add a key in the English locale file(s)?
• Have I tested the changes (manually)?
  • Are all unit tests still passing? (npm run test)
• Are the changes visual?
  • Have I provided screenshots/videos of the changes?