Homunculus related fixes

[MishimaHaruna]

Pull Request Prelude

• I have followed proper Hercules code styling.
• I have read and understood the contribution guidelines before making this PR.
• I am aware that this PR may be closed if the above-mentioned criteria are not fulfilled.

Changes Proposed

This PR contains a few different fixes related to homunculi.

1. Auto-vaporize fix: the automatic homunculus vaporization (on death or character skill reset) can fail if the homunculus has less than 80% HP. This fix forces it to occur if any other condition would prevent it. Manual uses of the Vaporize skill are still affected by the 80% HP restriction.
2. HP/SP refill on login: the HP and SP of homunculi are currently refilled on login. This was caused by code shared between homunculus creation and login. The fix prevents them to refill on login.
3. Intimacy requirement fix: the intimacy requirements for the homunculi's ultimate skills weren't read correctly from the database. They're now interpreted as documented.
4. Standalone homunculus/pet fix: homunculi, pets, mercenaries, etc. are no longer loaded if the character is logged in without a client attached (such as when autotrading).

Arguably, (1) can be considered a feature rather than a bug (depending on how closely one wants to emulate the bugs of official servers). I will not provide a configuration toggle for it, since I have no interest in emulating official bugs in Hercules, but if anyone is interested, feel free to add commits to this pull request (or open a pull request against my branch, before this is merged)

Issues addressed: Point (1) is related to #1130.

[HerculesWSAPI]

This change is 

[doobiegaming]

@MishimaHaruna have you fix homunculus on song? anyways im fron rathena. hahaha