Fix handling special chars in script paths

This commit improves the handling of paths with spaces or special
characters during script execution in the desktop application.

Key improvements:

- Paths are now quoted for macOS/Linux, addressing issues with
  whitespace or single quotes.
- Windows paths are enclosed in double quotes to handle special
  characters.

Other supporting changes:

- Add more documentation for terminal execution commands.
- Refactor terminal script file execution into a dedicated file for
  improved separation of concerns.
- Refactor naming of `RuntimeEnvironment` to align with naming
  conventions (no interface with I prefix) and for clarity.
- Refactor `TemporaryFileCodeRunner` to simplify it by removing the `os`
  parameter and handling OS-specific logic within the filename generator
  instead.
- Refactor `fileName` to `filename` for consistency.

tests/unit/shared/Stubs/FilenameGeneratorStub.ts

@@ -0,0 +1,14 @@
+import { FilenameGenerator } from '@/infrastructure/CodeRunner/Filename/FilenameGenerator';
+
+export class FilenameGeneratorStub implements FilenameGenerator {
+  private filename = `[${FilenameGeneratorStub.name}]file-name-stub`;
+
+  public generateFilename(): string {
+    return this.filename;
+  }
+
+  public withFilename(filename: string): this {
+    this.filename = filename;
+    return this;
+  }
+}