Add colored output to most tools; Make mkoverlay more tolerant for missing overlay files; Make psxcdgen_ex emit a warning when no license file is specified

src/Tools/psxcdgen_ex/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "psxcdgen_ex"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 cdtypes          = {path = "../cdtypes"}
 clap             = {version = "*", features = ["derive"]}
+colored          = "*"
 no-comment       = "*"
 paste            = "*"
 roxmltree        = "*"