Added practice field mode with single source of truth (not done, build-time only right now)

[Muxite]

Description

Added a new field mode with custom sizing primarily targeted for making smaller fields, but larger fields work as well.
Current approach has a .bzl file storing a dictionary of practice field dimensions, the bazel does text replacement at build-time. This allows the er-force sim dimensions that feed into SSL vision to be synced with createPracticeField().

Testing Done

Ran ./tbots.py run thunderscope --division practice which successfully played a game with no errors seen. Need to write unit tests. No field testing done yet, I hope to do that after my final.

Resolved Issues

resolves #3359

Length Justification and Key Files to Review

src/shared/practice_field_dims.bzl
src/proto/world.proto
src/software/world/field.h and field.cpp

Converted some meter constants into values proportional to field dimensions:
src/software/ai/hl/stp/play/kickoff_friendly/kickoff_friendly_play_fsm
src/software/ai/hl/stp/tactic/goalie/goalie_fsm
src/software/ai/hl/stp/play/shoot_or_chip/shoot_or_chip_play_fsm
src/software/ai/hl/stp/play/penalty_kick/penalty_kick_play_fsm

src/software/simulation/er_force_simulator.cpp -> loads "practice.txt"
src/software/er_force_simulator_main.cpp -> new cli option
src/proto/message_translation/tbots_protobuf.py -> adjusts robot spawns for field dims.

Review Checklist

It is the reviewers responsibility to also make sure every item here has been covered

• [ x] Function & Class comments: All function definitions (usually in the .h file) should have a javadoc style comment at the start of them. For examples, see the functions defined in thunderbots/software/geom. Similarly, all classes should have an associated Javadoc comment explaining the purpose of the class.
• [ x] Remove all commented out code
• [x ] Remove extra print statements: for example, those just used for testing
• [ x] Resolve all TODO's: All TODO (or similar) statements should either be completed or associated with a github issue

[Muxite]

changes to make: make ti fit on existing field but using part of an existing field, design around robocup where another team is using the other side of the field.