feat: add DMED comparador library with TXT and XLS processing

- Implemented TXT processor for DMED files, extracting RPPSS records.
- Added XLS processor for Prosoft reports, supporting both XLS and XLSX formats.
- Created a comparison tool to identify discrepancies between TXT and XLS data.
- Developed a GUI using eframe for user-friendly interaction.
- Included detailed README documentation for setup and usage instructions.
- Added error handling for file processing and improved data extraction methods.
- Implemented tests for data processing functions and utilities.
- Introduced a build script for Windows resource management.
- Added example scripts for basic and complete comparisons.
- Included a report generation feature for discrepancies found during comparisons.

build.rs

@@ -0,0 +1,13 @@
+#[cfg(windows)]
+fn main() {
+    if std::env::var("CARGO_CFG_TARGET_OS").unwrap() == "windows" {
+        let mut res = winres::WindowsResource::new();
+        res.set_icon("icon.ico"); // Caminho do seu arquivo .ico
+        res.compile().unwrap();
+    }
+}
+
+#[cfg(not(windows))]
+fn main() {
+    // Não faz nada em outros sistemas
+}