Inherit benchmark simulators

[Chase-Grajeda]

Updated existing benchmarks to be subclasses of Benchmark

Changes implemented:

• Added new subclasses to benchmarks/__init__.py
• Added prior and observation_model interfaces to benchmark.py
• Changed sample in benchmark.py to now use batched_call on __call__
• Added class BernoulliGLM to bernoulli_glm.py and vectorized covariance matrix
• Added class BernoulliGLMRaw to bernoulli_glm_raw.py and vectorized covariance matrix
• Added class GaussianLinear to gaussian_linear.py
• Added class GaussianLinearUniform to gaussian_linear_uniform.py
• Added class GaussianMixture to gaussian_mixture.py
• Added class InverseKinematics to inverse_kinematics.py
• Added class LotkaVolterra to lotka_volterra.py
• Added class SIR to sir.py
• Added class SLCP to slcp.py
• Added class SLCPDistractors to slcp_distractors.py
• Added class TwoMoons to two_moons.py

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 289 lines in your changes missing coverage. Please review.

Project coverage is 55.82%. Comparing base (3855cb2) to head (b2cdc00). Report is 21 commits behind head on streamlined-backend.

Files	Patch %	Lines
bayesflow/benchmarks/slcp_distractors.py	0.00%	36 Missing :warning:
bayesflow/benchmarks/sir.py	0.00%	33 Missing :warning:
bayesflow/benchmarks/lotka_volterra.py	0.00%	32 Missing :warning:
bayesflow/benchmarks/bernoulli_glm.py	0.00%	28 Missing :warning:
bayesflow/benchmarks/slcp.py	0.00%	23 Missing :warning:
bayesflow/benchmarks/bernoulli_glm_raw.py	0.00%	22 Missing :warning:
bayesflow/benchmarks/inverse_kinematics.py	0.00%	22 Missing :warning:
bayesflow/benchmarks/gaussian_mixture.py	0.00%	19 Missing :warning:
bayesflow/benchmarks/gaussian_linear_uniform.py	0.00%	18 Missing :warning:
bayesflow/benchmarks/gaussian_linear.py	0.00%	17 Missing :warning:
... and 3 more

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## streamlined-backend #180 +/- ## ======================================================= - Coverage 57.34% 55.82% -1.52% ======================================================= Files 104 105 +1 Lines 2070 2198 +128 ======================================================= + Hits 1187 1227 +40 - Misses 883 971 +88 ```

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[stefanradev93]

Looking good!