feat: config file, closes #47

Enable use of a config file, with custom keymap and custom colours

src/app_error.rs

@@ -2,13 +2,15 @@ use crate::app_data::DockerCommand;
 use std::fmt;
 
 /// app errors to set in global state
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone)]
 pub enum AppError {
     DockerCommand(DockerCommand),
     DockerExec,
     DockerLogs,
     DockerConnect,
+    IO(String),
     MouseCapture(bool),
+    Parse(String),
     Terminal,
 }
 
@@ -20,10 +22,12 @@ impl fmt::Display for AppError {
             Self::DockerExec => write!(f, "Unable to exec into container"),
             Self::DockerLogs => write!(f, "Unable to save logs"),
             Self::DockerConnect => write!(f, "Unable to access docker daemon"),
+            Self::IO(msg) => write!(f, "IO error with: {msg}"),
             Self::MouseCapture(x) => {
                 let reason = if *x { "en" } else { "dis" };
                 write!(f, "Unable to {reason}able mouse capture")
             }
+            Self::Parse(msg) => write!(f, "Parsing error: {msg}"),
             Self::Terminal => write!(f, "Unable to fully render to terminal"),
         }
     }