brandon/milestone report fixes (#118)

[pete-mc]

src/pages/MilestoneReport/MilestoneReport.ts

None - a9d1a3:

• Reordered the imports of createRoot and Root in the file.
• Updated the getMilestoneData method to include detailed documentation with JSDoc comments.
• Refactored the getMilestoneData method to sort achievements before filtering them based on certain criteria.
• Added a comment to clarify the filtering logic for achievements in the getMilestoneData method.

src/pages/MilestoneReport/components/MilestoneReport.tsx

None - 49d9a7:

• Fixed a typo in the class name from "MilestoneReprtTable" to "MilestoneReportTable".
• Added new columns "Next Milestone" and "Complete" to the table.
• Renamed the field "personalGrowth" to "personal_growth" for consistency.
• Updated column widths and headers for better display and clarity in the table.
• Adjusted the column settings in the GridComponent for consistency with the table changes.

src/pages/MilestoneReport/models/MilestonePlanningItem.ts

None - 91f6a9:

• Added TerrainAchievementsEventCount to the import statement in the file.
• Added a new interface MilestoneObject and classes MilestoneRequirements and MilestoneCurrent implementing MilestoneObject.
• Added functions calculateMilestone, calculateEventResult, and calculateOverallPercent.
• Modified the class MilestonePlanningItem by adding a new property overall_percent.
• Renamed the property personalGrowth to personal_growth in the MilestonePlanningItem class.
• Updated the constructor of MilestonePlanningItem to calculate values based on MilestoneRequirements and MilestoneCurrent.
• Removed redundant code related to calculating maxL, maxA, maxP, and eventCount in the MilestonePlanningItem constructor.

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