Replace directories with home & etcetera (#407)

* Use global lazy HOME_DIR

* Remove unused base_dirs

* Use `etcetera` instead of `directories`

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Co-authored-by: Thomas Schönauer <37108907+DottoDev@users.noreply.github.com>

Cargo.toml

@@ -21,7 +21,8 @@ path = "src/main.rs"
 
 [dependencies]
 home = "~0.5"
-directories = "~4.0"
+etcetera = "~0.8"
+once_cell = "~1.17"
 serde = { version = "~1.0", features = ["derive"] }
 toml = "0.5"
 which_crate = { version = "~4.1", package = "which" }