Fix cmd overwriting of unception config

in lua number if number will always be asserted as true
```lua
if 0 then print("number is == true") end
```

And in viml boolean doesn't exit
So for example this:
nvim --cmd "let g:unception_disable=0"
will still disable unception since in lua `if 0` == `if true`

we could also do this instead
```
nvim --cmd "lua vim.g.unception_disable=false"
```
but i think it's better to also support viml

Author: lguarda

plugin/main.lua

@@ -1,11 +1,12 @@
+print("OMG 2")
 -------------------------------------------------------------------------------
 -- Initialize all expected variables
 -------------------------------------------------------------------------------
-if(vim.g.unception_delete_replaced_buffer == nil) then
+if(vim.g.unception_delete_replaced_buffer == nil or vim.g.unception_delete_replaced_buffer == 0) then
     vim.g.unception_delete_replaced_buffer = false
 end
 
-if(vim.g.unception_open_buffer_in_new_tab == nil) then
+if(vim.g.unception_open_buffer_in_new_tab == nil or vim.g.unception_open_buffer_in_new_tab == 0) then
     vim.g.unception_open_buffer_in_new_tab = false
 end
 
@@ -18,11 +19,11 @@ if(vim.g.unception_multi_file_open_method == nil) then
     vim.g.unception_multi_file_open_method = "argadd"
 end
 
-if (vim.g.unception_enable_flavor_text == nil) then
+if (vim.g.unception_enable_flavor_text == nil or vim.g.unception_enable_flavor_text == 0) then
     vim.g.unception_enable_flavor_text = true
 end
 
-if (vim.g.unception_block_while_host_edits == nil) then
+if (vim.g.unception_block_while_host_edits == nil or vim.g.unception_block_while_host_edits == 0) then
     vim.g.unception_block_while_host_edits = false
 end
 
@@ -31,7 +32,7 @@ if (vim.g.unception_block_while_host_edits) then
     vim.g.unception_delete_replaced_buffer = false
 end
 
-if (vim.g.unception_disable  == nil) then
+if (vim.g.unception_disable == nil or vim.g.unception_disable == 0) then
     vim.g.unception_disable = false
 end