Some wamr-ide improvements (#1354)

including:
- enable macOS support
- documentation improvements
- fix some warnings

test-tools/wamr-ide/VSCode-Extension/resource/scripts/boot_debugger_server.sh

@@ -1,13 +1,10 @@
+#!/bin/bash
+
 # Copyright (C) 2019 Intel Corporation.  All rights reserved.
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
-#!/bin/bash
-
-docker run -it --name=wasm-debug-server-ctr \
+docker run --rm -it --name=wasm-debug-server-ctr \
            -v "$(pwd)":/mnt \
            -p 1234:1234 \
            wasm-debug-server:1.0 \
            /bin/bash -c "./debug.sh $1"
-
-docker stop wasm-debug-server-ctr>/dev/null
-docker rm wasm-debug-server-ctr>/dev/null