Support Nested Inline Tables

[BOOMeranGG]

Fixes #107

• Support Nested Inline Tables
• Support arrays in inline tables

First problem was in TomlInlineTable::parseInlineTableValue, when we called .split(","). It doesn't work with arrays (cause they also have comma) and with nested inline tables. Now we do the same split, but ignore all commas inside arrays/nested inline.

Second problem was in TomlInlineTable::returnTable, in test case we had this TomlTable fullTableKey:

[orchestr7]

Hm, it looks like deserialization should go in a little bit different way: toml-lang/toml#879

table2 = { table2."akuleshov7.com" = { name = "test" }, i = 1 }

is equal to the following one:

[table2]
    i = 1
[table2.table2."akuleshov7.com"]
    name = "test"

[orchestr7]

So in Table2 class there should be another one table2 field

[orchestr7]

Will be also great if you could add a test which deserializes the following code:

[table2]
    i = 1
[table2.table2."akuleshov7.com"]
    name = "test"

to same structures. Just to make it more obvious

[BOOMeranGG]

Done

[orchestr7]

Thanks, brat! LGTM. Free to merge (don't forget to squash)

[orchestr7]

@BOOMeranGG can you please also add the second example:
table2 = { "akuleshov7.com" = { name = "test" }, i = 1 }

toml-lang/toml#879

[BOOMeranGG]

Done in test fun decodeInlineTable()