Implement EnqueueExtensions

[codefromthecrypt]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This implements framework.EnqueueExtensions which is needed for common sample plugins, such as nodenumber

This also reduces namespace conflicts by moving the guest code that is related to protos into its own package. Notably there's a conflict on the framework symbol Node and the proto type.

Which issue(s) this PR fixes:

N/A

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

What are the benchmark results of this change?

goos: darwin
goarch: arm64
pkg: sigs.k8s.io/kube-scheduler-wasm-extension/internal/e2e
                                                        │ before.txt  │              now.txt               │
                                                        │   sec/op    │   sec/op     vs base               │
PluginPreFilter/noop-wat/params:_small-12                 131.6n ± 0%   132.0n ± 1%   +0.30% (p=0.011 n=6)
PluginPreFilter/noop-wat/params:_real-12                  132.0n ± 0%   133.0n ± 1%   +0.76% (p=0.006 n=6)
PluginPreFilter/noop/params:_small-12                     277.1n ± 0%   289.1n ± 4%   +4.33% (p=0.002 n=6)
PluginPreFilter/noop/params:_real-12                      279.5n ± 4%   280.9n ± 2%        ~ (p=0.485 n=6)
PluginPreFilter/test/params:_small-12                     4.329µ ± 1%   4.342µ ± 1%        ~ (p=0.145 n=6)
PluginPreFilter/test/params:_real-12                      48.75µ ± 2%   47.95µ ± 1%   -1.64% (p=0.015 n=6)
PluginFilter/noop-wat/params:_small-12                    267.5n ± 1%   351.8n ± 1%  +31.50% (p=0.002 n=6)
PluginFilter/noop-wat/params:_real-12                     266.6n ± 0%   351.2n ± 1%  +31.76% (p=0.002 n=6)
PluginFilter/noop/params:_small-12                        421.3n ± 0%   544.9n ± 1%  +29.35% (p=0.002 n=6)
PluginFilter/noop/params:_real-12                         421.9n ± 1%   546.5n ± 1%  +29.52% (p=0.002 n=6)
PluginFilter/test/params:_small-12                        7.833µ ± 0%   7.952µ ± 0%   +1.52% (p=0.002 n=6)
PluginFilter/test/params:_real-12                         111.8µ ± 1%   111.4µ ± 1%        ~ (p=0.394 n=6)
PluginScore/noop-wat/params:_small-12                     268.6n ± 2%   351.5n ± 0%  +30.85% (p=0.002 n=6)
PluginScore/noop-wat/params:_real-12                      269.3n ± 1%   352.1n ± 1%  +30.76% (p=0.002 n=6)
PluginScore/noop/params:_small-12                         517.4n ± 1%   637.7n ± 0%  +23.24% (p=0.002 n=6)
PluginScore/noop/params:_real-12                          463.3n ± 0%   581.5n ± 0%  +25.50% (p=0.002 n=6)
PluginScore/test/params:_small-12                         4.695µ ± 0%   4.802µ ± 0%   +2.28% (p=0.002 n=6)
PluginScore/test/params:_real-12                          49.18µ ± 2%   48.73µ ± 1%        ~ (p=0.065 n=6)
PluginPrefilterFilterAndScore/noop-wat/params:_small-12   403.2n ± 1%   488.6n ± 0%  +21.18% (p=0.002 n=6)
PluginPrefilterFilterAndScore/noop-wat/params:_real-12    402.1n ± 1%   490.0n ± 1%  +21.88% (p=0.002 n=6)
PluginPrefilterFilterAndScore/noop/params:_small-12       655.9n ± 0%   785.6n ± 1%  +19.78% (p=0.002 n=6)
PluginPrefilterFilterAndScore/noop/params:_real-12        659.8n ± 1%   792.4n ± 0%  +20.09% (p=0.002 n=6)
PluginPrefilterFilterAndScore/test/params:_small-12       8.612µ ± 1%   9.027µ ± 1%   +4.81% (p=0.002 n=6)
PluginPrefilterFilterAndScore/test/params:_real-12        111.8µ ± 2%   112.8µ ± 1%        ~ (p=0.132 n=6)
PluginEnqueue/noop-wat-12                                               77.31n ± 1%
PluginEnqueue/noop-12                                                   112.7n ± 2%
PluginEnqueue/test-12                                                   130.7n ± 2%
geomean                                                   1.325µ        1.113µ       +12.93%

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: codefromthecrypt

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[codefromthecrypt]

ok I cleaned up the PR so that it is ready to merge if ok (backfilled test coverage and notes).

After this, we can add guest config (e.g. plugin to read yaml or otherwise) and PreScore, so we can implement a realistic, configurable plugin like nodenumber.

[codefromthecrypt]

ok all good. bench should have become a little worse on noop, due to extra hook. Things look correct now.

[codefromthecrypt]

@sanposhiho PTAL I think I got everything (pre-squashed)

[k8s-ci-robot]

New changes are detected. LGTM label has been removed.

[codefromthecrypt]

thanks for the catch @sanposhiho!

[codefromthecrypt]

/unhold

[codefromthecrypt]

tomorrow I'll work on pre-score and hopefully config. after that, we should be able to port a basic plugin.