Add i18n support and translations for finnish language

config.toml

@@ -5,15 +5,24 @@
 # You can place your configuration file in $XDG_CONFIG_HOME/wtc/config.toml,
 # usually ~/.config/wtc/config.toml
 
+# The language of the application.
+# Currently supported languages are "en", "fi"
+language = "en"
+
 # This section is for default values for inputs
 [defaults]
+
 # Leave empty if you don't have an unpaid lunch break
 # or if you normally log your lunch break hours
 lunchBreakDuration = "00:30"
+
 # Your work day duration
 workDayDuration = "07:30"
+
 # The time you start working
+
 startTime = "08:00"
+
 # The time you stop working. Can either be "now" or a time
 stopTime = "now"
 
@@ -25,5 +34,6 @@ workDayDuration = true
 startTime = true
 stopTime = true
 logged = true
+
 # It is assumed that you didn't have lunch if this is false
 hadLunch = true