other: use custom time chart grid implementation

[ClementTsang]

Description

A description of the change, what it does, and why it was made. If relevant (such as any change that modifies the UI), please provide screenshots of the changes:

Pulls in the tui-rs grid logic so I can implement custom braille painting logic. We basically "flatten" the layering logic into a single layer by replacing resetting cells if the colour is different. This avoids the multiple allocations if we used multiple layers as intended with tui-rs.

This gives us chart results similar to the current stable version, but with a flamegraph similar to the current master branch. See (top is this branch, bottom is stable):

Issue

If applicable, what issue does this address?

Closes: #933

Testing

If relevant, please state how this was tested. All changes must be tested to work:

If this is a code change, please also indicate which platforms were tested:

• Windows
• macOS
• Linux

Checklist

If relevant, ensure the following have been met:

• Areas your change affects have been linted using rustfmt (cargo fmt)
• The change has been tested and doesn't appear to cause any unintended breakage
• Documentation has been added/updated if needed (README.md, help menu, doc pages, etc.)
• The pull request passes the provided CI pipeline
• There are no merge conflicts
• If relevant, new tests were added (don't worry too much about coverage)

[codecov-commenter]

Codecov Report

Base: 20.07% // Head: 19.64% // Decreases project coverage by -0.42% ⚠️

Coverage data is based on head (43afaeb) compared to base (21a21b8).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #937      +/-   ##
==========================================
- Coverage   20.07%   19.64%   -0.43%     
==========================================
  Files          74       75       +1     
  Lines       14247    14558     +311     
==========================================
  Hits         2860     2860              
- Misses      11387    11698     +311     

Impacted Files	Coverage Δ
src/components/tui_widget/time_chart.rs	48.28% <ø> (ø)
src/components/tui_widget/time_chart/canvas.rs	0.00% <0.00%> (ø)

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