[Console] [Table] Added footers to console tables

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | none
| License       | MIT
| Doc PR        | none yet

I needed some footers to tables, so I added it

````
+---------------+-----------------------+------------------+
| ISBN          | Title                 | Author           |
+---------------+-----------------------+------------------+
| 99921-58-10-7 | Divine Comedy         | Dante Alighieri  |
| 9971-5-0210-0 | A Tale of Two Cities  | Charles Dickens  |
| 960-425-059-0 | The Lord of the Rings | J. R. R. Tolkien |
+---------------+-----------------------+------------------+
| Footer 1      | Footer 2              | Footer 3         |
````

I decided I didnt wanted the last row seperator after the footers, I think it looks better without it.

Footers have the default style of ````<comment>%s</comment>```` (yellow on black background)

Footers is also included in the tests

--- edit
[Coding standard](http://fabbot.io/report/symfony/symfony/10922/09dba6b7be1bc0e2126f6c03b2607ef16783bc41) fails on this PR - The reason is the test line endings needs trailing spaces, or else the test of course fails when creating table.

If I download the [cf patch](http://fabbot.io/patch/symfony/symfony/10922/09dba6b7be1bc0e2126f6c03b2607ef16783bc41/cs.diff) provided, the unit test fails