feat: add persistent history log and TUI History tab

[riyapetle]

Resolves #58

📝 Details

This PR introduces a persistent history log and a new History tab in the TUI, allowing users to easily track what packages were installed or removed over time.

• Persistent Logging (src/history.rs): Securely tracks and writes install and remove events to ~/.local/state/trx/history.log (or respects $XDG_STATE_HOME if set).
• Structured Timestamps: Integrated the chrono dependency to utilize precise UTC ISO8601 timestamps.
• TUI History Tab (src/ui/app.rs & src/ui/draw.rs):
  • Added a dedicated History tab cleanly integrated into the navigation cycle.
  • Renders a backwards-chronological log (newest events appear at the top).
  • Handles missing log files gracefully with a helpful fallback message.
  • Fully scrollable using standard navigational keys (k/j, Up/Down, Home/End).
  • Implemented dynamic color-coding (Success green for INSTALL, Error red for REMOVE).

📸 Screenshots

🔄 Reproducibility

To test this feature locally:

1. Switch to this branch and run cargo run.
2. Navigate to the History tab to observe the empty state fallback.
3. Install a package via the Search tab.
4. Remove a package via the Installed tab.
5. Navigate back to the History tab to verify that both events were logged correctly, color-coded, and are scrollable.

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[riyapetle]

Hi @pie-314! 👋

I have successfully submitted the Pull Request implementing the persistent transaction history tab as requested.

The new History tab securely tracks all install and remove commands with structured timestamps, color-codes the events, and handles empty/missing log environments gracefully.

I have attached all the requested screenshots, reproducibility steps, and implementation details directly in the PR description. Let me know if any adjustments or changes are needed during your review!

[pie-314]

@riyapetle you have to raise pr in dev branch

[riyapetle]

@pie-314 I have just updated the base branch of this Pull Request to point to dev as requested

[pie-314]

LGTM