Patch 1 (After GoGodotJam 4 voting)

Here's the first major patch to the game, which was an entry to the GoGodotJam 4. Several improvements and fixes are done within this patch.

Changes:
- Added interaction label and appears when the player points at NPC and weapon box(green)
- Added more energy orb geysers to fill in the world
- Required energy orbs are increased from 20 to 60
- Player is now able to refill the ammo and heal when they are at base (The more energy orbs acquired, the faster it refills)
- Added the "background", progression and ending of the game
- The AIs can now do leading shots to the player with somewhat accuracies
- AIs' close-ranged AOE attacks' damage increased
- The revival time for AIs and player have been tweaked

Fixes:
- NPC has its gravity fixed and can fall on the ground
- Buttons cannot be pressed issue fixed