feat(binding/lua): introduce opendal lua binding

[oowl]

Introduce opendal lua binding by mlua

opendal lua binding introduces these lua API (from C binding)

operator.new(schema, option)
operator:read(path)
operator:write(path, data)
operator:delete(path)
operator:is_exist(path)
operator:stat(path)

meta = operator:stat(path)
meta:content_length()
meta:is_file()
meta:is_dir()

Test:
path test/opendal_test.lua, I will add CI workflow in the next PR.

╰─$ busted -o gtest test/opendal_test.lua
[==========] Running tests from scanned files.
[----------] Global test environment setup.
[----------] Running tests from test/opendal_test.lua
[ RUN      ] test/opendal_test.lua @ 3: opendal unit test opendal fs schema operator function in fs schema
[       OK ] test/opendal_test.lua @ 3: opendal unit test opendal fs schema operator function in fs schema (1.29 ms)
[ RUN      ] test/opendal_test.lua @ 15: opendal unit test opendal fs schema meta function in fs schema
[       OK ] test/opendal_test.lua @ 15: opendal unit test opendal fs schema meta function in fs schema (0.21 ms)
[----------] 2 tests from test/opendal_test.lua (2.83 ms total)

[----------] Global test environment teardown.
[==========] 2 tests from 1 test file ran. (2.90 ms total)
[  PASSED  ] 2 tests.

[Xuanwo]

Bravo! I'm so happy to see an opendal lua binding!

[Xuanwo]

Great! Thanks!

[Xuanwo]

cc @oowl, are you willing to create a tracking issue for not finished tasks of opendal-lua like #2465?