Add enable GOTV settings to CS:GO config

Short version:
```
//Enable GOTV
tv_enable 1
tv_delaymapchange 1
tv_delay 45
tv_deltacache 2
tv_dispatchmode 1
tv_maxclients 10
tv_maxrate 0
tv_overridemaster 0
tv_relayvoice 1
tv_snapshotrate 20
tv_timeout 60
tv_transmitall 1
```
Of course, you can tweak the values.

Without `tv_enable 1` I can't see the GOTV in the LAN discovery.

ESL official GOTV settings:

[https://play.eslgaming.com/download/26251762/](https://play.eslgaming.com/download/26251762/)
```
// ESL - www.eslgaming.com
// GOTV Config
// 14.01.2016

sv_hibernate_postgame_delay 180

tv_allow_camera_man 1 // Auto director allows spectators to become camera man
tv_allow_static_shots 1 // Auto director uses fixed level cameras for shots
tv_autorecord 1 // Automatically records all games as GOTV demos.
tv_chatgroupsize 0 // Set the default chat group size
tv_chattimelimit 8 // Limits spectators to chat only every n seconds
tv_debug 0 // GOTV debug info.
tv_delay 90 // GOTV broadcast delay in seconds
tv_delaymapchange 1 // Delays map change until broadcast is complete
tv_deltacache 2 // Enable delta entity bit stream cache
tv_dispatchmode 1 // Dispatch clients to relay proxies: 0=never, 1=if appropriate, 2=always
tv_enable 1 // Activates GOTV on server.
tv_maxclients 10 // Maximum client number on GOTV server.
tv_maxrate 20000 // Max GOTV spectator bandwidth rate allowed, 0 == unlimited
tv_name "ESL - GOTV" // GOTV host name
tv_overridemaster 0 // Overrides the GOTV master root address.
tv_port 27020 // Host SourceTV port
tv_relaypassword schmetterling // GOTV password for relay proxies
tv_relayvoice 0 // Relay voice data: 0=off, 1=on
tv_snapshotrate 24 // Snapshots broadcasted per second
tv_timeout 60 // GOTV connection timeout in seconds.
tv_title "ESL - GOTV" // Set title for GOTV spectator UI
tv_transmitall 1 // Transmit all entities (not only director view)

say "> ESL GOTV Config loaded - 14.01.2016 <"
```

Or the best way to this is to include in the `csgoserver.cfg`?

And extra command which could be handy:

The folllowing cvars will automatically record server-side demos for all maps:
```
tv_autorecord 1
```