Add Working Milestone with Initial Results and Model Inference (#82)

* wip: add function to create stratified train-test split from STFT data

* feat(src): implement working function for dataset B to create ready data from STFT files stft_files and add setup.py for package configuration

* feat(notebook): Update variable names for clarity, remove unused imports, and streamline data processing. Implement data concatenation using pandas concat for efficiency. Add validation steps for Dataset B and improve model training consistency across sensors.

* fix(.gitignore): add rule to ignore egg-info directories and ensure proper formatting

* docs(README): add instructions for running stft.ipynb notebook

* feat(notebook): Add evaluation metrics and confusion matrix visualizations for model predictions on Dataset B. Remove commented-out code and integrate data preparation using create_ready_data function.

---------

Co-authored-by: nuluh <dam.ar@outlook.com>

.vscode/settings.json

@@ -1,3 +1,4 @@
 {
-  "python.analysis.extraPaths": ["./code/src/features"]
+  "python.analysis.extraPaths": ["./code/src/features"],
+  "jupyter.notebookFileRoot": "${workspaceFolder}/code"
 }