New Calendar Pie Chart

[Lyq322]

What kind of change does this PR introduce? (check one with "x")

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior? (You can also link to an open issue here)
Issue #1918

What is the new behavior?
The new calendar pie chart displays a pie chart for each day.

The days do not necessarily have to be a single month; it could span many months and/or start in the middle of a month.

Detailed information about each pie chart is shown in the tooltip:

Chart options include:

• Show legend, legend title and position
• Show x axis, rotate and trim x axis ticks, wrap ticks
• Inner padding
• Disable tooltip
• Start Sunday vs Monday

Does this PR introduce a breaking change? (check one with "x")

• Yes
• No

If this PR contains a breaking change, please describe the impact and migration path for existing applications: ...
n/a

Other information:
n/a