fix(build): Resolve bad shell invocation shell (#8)

Addressed an issue with invocation of child process during building procedure in Windows shell.

Signed-off-by: Ryuu Mitsuki <dhefam31@gmail.com>

scripts/build.ts

@@ -121,6 +121,7 @@ async function minify(files: Array<string>): Promise<void> {
   const tsc: ChildProcess = spawn(tscCmd[0], tscCmd.slice(1), {
     cwd: rootDir,
     stdio: 'inherit',
+    shell: true,
     windowsHide: true
   });