Prepare publish (#39)

* refactor!: rename `.data` and `.log` files
   - `timr.data` -> `app.data`
   - `timr.log` -> `app.log`
* refactor!: rename app name `timr` -> `timr-tui`
* docs: update README (paths, names, installation)
* update Cargo.toml
* fix(release): warning: unused variable: `log_dir`

Cargo.toml

@@ -1,7 +1,15 @@
 [package]
-name = "timr"
-version = "0.1.0"
+name = "timr-tui"
+version = "0.9.0"
+description = "TUI to organize your time: Pomodoro, Countdown, Timer."
 edition = "2021"
+rust-version = "1.82.0"
+homepage = "https://github.com/sectore/timr-tui"
+repository = "https://github.com/sectore/timr-tui"
+readme = "README.md"
+license = "MIT"
+keywords = ["tui", "timer", "countdown", "pomodoro"]
+categories = ["command-line-utilities"]
 
 [dependencies]
 ratatui = "0.29.0"