Implement Golem Standard changes for Outgoing Network Traffic

[stranger80]

Outgoing Network Traffic introduces updates to the Golem Standards:

• New golem.runtime.capabilities enum values
• Payload Manifest-related properties as per GAP-5 ([GAP-5] Payload Manifest #28)
• describe also whitelisting

[evik42]

Update GAP-5 with the latest manifest format (keys - possible values).

@stranger80 in which document would you expect description of whitelist usage: Handbook, some GAP or other?

Add current capabilities to: Standard - Golem runtime

[stranger80]

@stranger80 in which document would you expect description of whitelist usage: Handbook, some GAP or other?

Definitely in the Golem Standards, please, as part of golem.srv.comp.payload property specification.

Would you mind creating a PR in the golem-architecture repo, with the description of the implemented properties & values/enums, and assign for review to me, please? Feel free to ping me with questions re. placement or formulation of the property descriptions.