Remove legacy JVM-specific file system, shell, and related implementations; migrate to platform-agnostic and common main modules.

src/commonMain/kotlin/mtmc/os/shell/builtins/AssembleCommand.kt

@@ -0,0 +1,45 @@
+package mtmc.os.shell.builtins
+
+import mtmc.emulator.MonTanaMiniComputer
+import mtmc.os.shell.ShellCommand
+import mtmc.tokenizer.MTMCTokenizer
+
+class AssembleCommand : ShellCommand() {
+  @Throws(Exception::class)
+  public override fun exec(tokens: MTMCTokenizer, computer: MonTanaMiniComputer) {
+    val fs = computer.fileSystem
+    val src = tokens.collapseTokensAsString()
+    require(!(src == null || src.isBlank())) { "missing or required argument 'src'" }
+    /*
+        val srcPath: Path = getDiskPath(src, fs)
+
+        val dst = tokens.collapseTokensAsString()
+        require(!(dst == null || dst.isBlank())) { "missing required argument 'dst'" }
+        val dstPath: Path = getDiskPath(dst, fs)
+
+        val contents = Files.readString(srcPath)
+        val assembler = Assembler()
+        val file_name =
+          fs.resolve(src) // srcPath.toString().substring(DISK_PATH.toString().length()).replaceAll("\\\\", "/");
+        val executable = assembler.assembleExecutable(file_name, contents)
+        executable.dump(dstPath)
+        computer.notifyOfFileSystemUpdate()
+    */
+  }
+
+  override val help: String
+    get() = """
+                asm <src> <dst>
+                    - src : path to a .asm file
+                    - dst : path to a target output binary
+                    """.trimIndent()
+
+  companion object {
+    /*
+        fun getDiskPath(pathString: String, fs: FileSystem): Path {
+          val path = Path.of("disk" + fs.resolve(pathString))
+          return path.toAbsolutePath()
+        }
+    */
+  }
+}