replace anyhow and log with color_eyre and tracing

Since Himalaya is intended to be ran as a CLI in the terminal emulator
environment, their user experience could vastly improve with better and
more colorful error messages and logging.

This change will replace more minimal libraries for error-reporting/han-
dling with their more advanced counterparts.

Since these crates have tight integrations, this commit will change both
in one shot.

Also we have don't need env_logger any more. So I also have removed that
guy as well.

Signed-off-by: Perma Alesheikh <me@prma.dev>

src/folder/command/add.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::add::AddFolder};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/delete.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use dialoguer::Confirm;
 use email::{backend::feature::BackendFeatureSource, folder::delete::DeleteFolder};
-use log::info;
 use std::process;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/expunge.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::expunge::ExpungeFolder};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/list.rs

@@ -1,7 +1,7 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use email::{backend::feature::BackendFeatureSource, folder::list::ListFolders};
-use log::info;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/command/mod.rs

@@ -4,7 +4,7 @@ mod expunge;
 mod list;
 mod purge;
 
-use anyhow::Result;
+use color_eyre::Result;
 use clap::Subcommand;
 
 use crate::{config::TomlConfig, printer::Printer};

src/folder/command/purge.rs

@@ -1,9 +1,9 @@
-use anyhow::Result;
 use clap::Parser;
+use color_eyre::Result;
 use dialoguer::Confirm;
 use email::{backend::feature::BackendFeatureSource, folder::purge::PurgeFolder};
-use log::info;
 use std::process;
+use tracing::info;
 
 #[cfg(feature = "account-sync")]
 use crate::cache::arg::disable::CacheDisableFlag;

src/folder/mod.rs

@@ -2,7 +2,7 @@ pub mod arg;
 pub mod command;
 pub mod config;
 
-use anyhow::Result;
+use color_eyre::Result;
 use serde::Serialize;
 use std::ops;