feat: voicevox_core (Rust API)以外のクレートをMIT Licenseと宣言 (#913)

`voicevox_core` (Rust API)以外のクレートの`package.license`を設定する。
今後crates.ioに上げる可能性のある`voicevox_core_macros`については
VOICEVOX/open_jtalk-rs#32 のようにLICENSEファイルへのシンボリックリンク
を置く。

`voicevox_core` (Rust API)についてだけは #825 の中で行う。

Refs: #332

Cargo.toml

@@ -115,6 +115,7 @@ version = "0.0.0"
 edition = "2021"
 publish = false
 rust-version = "1.81.0"
+license = "MIT"
 
 # min-sized-rustを元にrelease buildのサイズが小さくなるようにした
 # https://github.com/johnthagen/min-sized-rust

crates/downloader/Cargo.toml

@@ -2,6 +2,7 @@
 name = "downloader"
 edition.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [[bin]]
 name = "download"

crates/test_util/Cargo.toml

@@ -2,6 +2,7 @@
 name = "test_util"
 edition.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [dependencies]
 libloading.workspace = true

crates/voicevox_core_c_api/Cargo.toml

@@ -4,6 +4,7 @@ version.workspace = true
 edition.workspace = true
 publish.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [lib]
 crate-type = ["cdylib"]

crates/voicevox_core_java_api/Cargo.toml

@@ -4,6 +4,7 @@ version.workspace = true
 edition.workspace = true
 publish.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [lib]
 crate-type = ["cdylib"]

crates/voicevox_core_macros/Cargo.toml

@@ -4,6 +4,7 @@ version.workspace = true
 edition.workspace = true
 publish.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [lib]
 name = "macros"

crates/voicevox_core_macros/LICENSE

@@ -0,0 +1 @@
+../../LICENSE

crates/voicevox_core_python_api/Cargo.toml

@@ -4,6 +4,7 @@ version = "0.0.0"
 edition.workspace = true
 publish.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [lib]
 crate-type = ["cdylib"]

crates/xtask/Cargo.toml

@@ -2,6 +2,7 @@
 name = "xtask"
 edition.workspace = true
 rust-version.workspace = true
+license.workspace = true
 
 [dependencies]
 cbindgen.workspace = true

deny.toml

@@ -171,12 +171,5 @@ clarify = [
     { name = "ring", version = "0.17", expression = "MIT AND ISC AND OpenSSL", license-files = [{ path = "LICENSE", hash = 0xbd0eed23 }] },
 
     # TODO: `package.license`を書く
-    { name = "downloader", expression = "MIT", license-files = [] },
-    { name = "test_util", expression = "MIT", license-files = [] },
     { name = "voicevox_core", expression = "MIT", license-files = [] },
-    { name = "voicevox_core_c_api", expression = "MIT", license-files = [] },
-    { name = "voicevox_core_java_api", expression = "MIT", license-files = [] },
-    { name = "voicevox_core_macros", expression = "MIT", license-files = [] },
-    { name = "voicevox_core_python_api", expression = "MIT", license-files = [] },
-    { name = "xtask", expression = "MIT", license-files = [] },
 ]