Clean temp file automatically

[AbaoFromCUG]

Regarding to https://github.com/AckslD/nvim-FeMaco.lua/issues/29

• Call vim.loop.fs_unlink to clean temp file.
• Add little description for create_tmp_filepath

[AbaoFromCUG]

I am sorry that Femaco cann't run in my neovim correctly, and ouput some error info

Error executing Lua callback: /usr/share/nvim/runtime/lua/vim/treesitter.lua:189: attempt to index local 'node_or_range' (a nil value)                                                                                                 
stack traceback:                                                                                                                                                                                                                       
        /usr/share/nvim/runtime/lua/vim/treesitter.lua:189: in function 'get_match_range'                                                                                                                                              
        ...ocal/share/nvim/lazy/nvim-FeMaco.lua/lua/femaco/edit.lua:84: in function 'get_match_at_cursor'                                                                                                                              
        ...ocal/share/nvim/lazy/nvim-FeMaco.lua/lua/femaco/edit.lua:156: in function 'edit_code_block'                                                                                                                                 
        ...ocal/share/nvim/lazy/nvim-FeMaco.lua/lua/femaco/init.lua:12: in function <...ocal/share/nvim/lazy/nvim-FeMaco.lua/lua/femaco/init.lua:12> 

I have try:

• Reinstall Markdown treesitter
• Install neovim-git

[tan-wei]

@AbaoFromCUG I just met the same issue. But why do you raise a comment here?

[tan-wei]

I open #32 to explain this.

[AckslD]

@AbaoFromCUG this should now be fixed by #33 (and #34). Feel free to rebase and look into my comment above