feat: add infer and tree_magic_mini meta plugins, make zstd internal by default

- Add infer crate as meta plugin for MIME type detection
- Add tree_magic_mini crate as alternative meta plugin for MIME type detection
- Add zstd, infer, tree_magic_mini to default features
- Fix static build script to use musl target instead of glibc+crt-static
- Remove hardcoded shell list from --generate-completion help text
- Fix update() in both new plugins to emit MIME metadata when buffer fills

src/meta_plugin/mod.rs

@@ -9,6 +9,8 @@ pub mod digest;
 pub mod env;
 pub mod exec;
 pub mod hostname;
+#[cfg(feature = "infer")]
+pub mod infer_plugin;
 pub mod keep_pid;
 pub mod magic_file;
 pub mod read_rate;
@@ -18,6 +20,8 @@ pub mod shell_pid;
 pub mod text;
 #[cfg(feature = "tokens")]
 pub mod tokens;
+#[cfg(feature = "tree_magic_mini")]
+pub mod tree_magic_mini;
 pub mod user;
 
 pub use digest::DigestMetaPlugin;
@@ -28,11 +32,15 @@ pub use magic_file::MagicFileMetaPlugin;
 pub use cwd::CwdMetaPlugin;
 pub use env::EnvMetaPlugin;
 pub use hostname::HostnameMetaPlugin;
+#[cfg(feature = "infer")]
+pub use infer_plugin::InferMetaPlugin;
 pub use keep_pid::KeepPidMetaPlugin;
 pub use read_rate::ReadRateMetaPlugin;
 pub use read_time::ReadTimeMetaPlugin;
 pub use shell::ShellMetaPlugin;
 pub use shell_pid::ShellPidMetaPlugin;
+#[cfg(feature = "tree_magic_mini")]
+pub use tree_magic_mini::TreeMagicMiniMetaPlugin;
 pub use user::UserMetaPlugin;
 
 #[cfg(not(feature = "magic"))]
@@ -263,6 +271,8 @@ pub enum MetaPluginType {
     Exec,
     Env,
     Tokens,
+    TreeMagicMini,
+    Infer,
 }
 
 /// Central function to handle metadata output with name mapping.