obs update config

[mingzhang96]

• [x] add deep merge config
• [x] add speed in obs
• [x] add full vision obs type
• [x] add Human vs. Bot mode in interaction
• [x] engine update: update default vel & vel_max to make moving faster
• [x] engine update: modified acceleration definition method
• [x] engine bug fix: decouple direction for action and moving
• [x] update related doc: interaction & action space & obs space

[codecov[bot]]

Codecov Report

Merging #7 (c31e0e8) into main (fc67097) will decrease coverage by 0.25%. The diff coverage is 90.14%.

@@            Coverage Diff             @@
##             main       #7      +/-   ##
==========================================
- Coverage   95.24%   94.99%   -0.26%     
==========================================
  Files          51       55       +4     
  Lines        3135     3258     +123     
==========================================
+ Hits         2986     3095     +109     
- Misses        149      163      +14     

Flag	Coverage Δ
unittests	94.99% <90.14%> (-0.26%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
gobigger/server/__init__.py	100.00% <ø> (ø)
gobigger/server/server.py	68.83% <61.29%> (-1.82%)	:arrow_down:
gobigger/utils/config_utils.py	86.95% <86.95%> (ø)
gobigger/render/env_render.py	93.51% <89.51%> (-3.87%)	:arrow_down:
gobigger/agents/bot_agent.py	77.14% <100.00%> (+4.76%)	:arrow_up:
gobigger/balls/base_ball.py	100.00% <100.00%> (ø)
gobigger/balls/clone_ball.py	99.50% <100.00%> (+<0.01%)	:arrow_up:
gobigger/balls/food_ball.py	100.00% <100.00%> (ø)
gobigger/balls/spore_ball.py	100.00% <100.00%> (ø)
gobigger/balls/thorns_ball.py	97.95% <100.00%> (ø)
... and 13 more

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