Tools: Fix esptool wrappers by avoiding importing the module

Importing esptool in wrappers could cause importing the wrapper itself.
Updating the PATH is not reliable. For example, os.path.realpath()
changes the Windows driver letter to uppercase therefore, misses the
right path for users with small device letters in their PATH. Removing
paths without considering cases could also lead to errors.

This fix invokes esptool scripts as modules without the need to
importing them.

Closes #9861

Closes espressif/vscode-esp-idf-extension#791

components/esptool_py/esptool/espefuse.py

@@ -4,19 +4,8 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-import os
+import subprocess
 import sys
 
-try:
-    sys.path.remove(os.path.dirname(os.path.realpath(__file__)))  # do not import this script
-except ValueError:
-    pass
-
-try:
-    import espefuse
-except ImportError:
-    raise ModuleNotFoundError('No module named "espefuse" please install espefuse.py by running '
-                              'the install and export scripts.')
-
 if __name__ == '__main__':
-    espefuse._main()  # type: ignore
+    sys.exit(subprocess.run([sys.executable, '-m', 'espefuse'] + sys.argv[1:]).returncode)

components/esptool_py/esptool/espsecure.py

@@ -4,19 +4,8 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-import os
+import subprocess
 import sys
 
-try:
-    sys.path.remove(os.path.dirname(os.path.realpath(__file__)))  # do not import this script
-except ValueError:
-    pass
-
-try:
-    import espsecure
-except ImportError:
-    raise ModuleNotFoundError('No module named "espsecure" please install espsecure.py by running '
-                              'the install and export scripts.')
-
 if __name__ == '__main__':
-    espsecure._main()  # type: ignore
+    sys.exit(subprocess.run([sys.executable, '-m', 'espsecure'] + sys.argv[1:]).returncode)

components/esptool_py/esptool/esptool.py

@@ -4,19 +4,8 @@
 # SPDX-License-Identifier: Apache-2.0
 #
 
-import os
+import subprocess
 import sys
 
-try:
-    sys.path.remove(os.path.dirname(os.path.realpath(__file__)))  # do not import this script
-except ValueError:
-    pass
-
-try:
-    import esptool
-except ImportError:
-    raise ModuleNotFoundError('No module named "esptool" please install esptool.py by running '
-                              'the install and export scripts.')
-
 if __name__ == '__main__':
-    esptool._main()  # type: ignore
+    sys.exit(subprocess.run([sys.executable, '-m', 'esptool'] + sys.argv[1:]).returncode)