Line layer decimation, interpolation, snapping, and tooltip improvements

[AaronPlave]

Resource plot decimation and hover value interpolation. Significantly improves resource plotting performance and resource tooltip behavior.

Changes:

• Decimate line layer points using min-max algorithm (from chartJS, see https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019YLKSA2&l=en-US) to only draw the necessary number of points to represent the data given the number of available pixels.
• Limit line drawing to the visible time range and connect the line to the neighboring point on each side, if available, to maintain correctness of the plot.
• Rework timeline tooltips for clarity
• Implement better snapping for timeline line layer tooltip
• Implement hover value interpolation option for line layers
• Option to hide the timeline tooltip
• Option to only show the tooltip when close to a line segment
• Add hover styling to the snapped/interpolated point
• Add indicator to snapped/interpolated point. If interpolating, show indicators on the values used for interpolation.
• Update timeline icon bar to new tray design with additional menu

Closes #856, closes #959. Multiple PRs have addressed the #959 but with this PR, performance targets have been achieved for the Clipper TT-6 plan.

TODO:

• Icons for decimate/show all points, interpolate cursor value (not to be confused with the future feature of interpolate step function points), and "show tooltip only when you're hovering over the line". Or stuff these into some sort of menu with words. See Design icon tray for top of timeline #1076
• Test with a variety of input data
• Option to hide tooltip
• Improve hover point styling, try scaling by layer point size, different styling, etc
• Document and clean code, mention that the min max implementation is from Chart.js
• Rework tooltip, remove ID, use layer name if provided, show layer color?, indicate that nearest point is left/right if not on screen
• Gap compatibility
• Improve hit detection on spikes
• Integrate with x-range as line rendering
• Show attention director if closest point is offscreen on hover
• Confirm that these options should not be part of the view