Add golang_support_tools to boilerplate

[pingsutw]

What changes were proposed in this pull request?

make generate fails to generate the proto file without golang_support_tools.

How was this patch tested?

make generate

Screenshots

(flytekit-3.10) ➜  flyte git:(agent-metric) ✗ make generate
Using temp directory /var/folders/xp/_4ltv_bx3pb_r0bm00fk9z_00000gn/T/gotooling-XXX.C3xwIOs0
cp: boilerplate/flyte/golang_support_tools/*: No such file or directory
make: *** [download_tooling] Error 1

Check all the applicable boxes

• I updated the documentation accordingly.
• All new and existing tests passed.
• All commits are signed-off.

Related PRs

Docs link

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (ba10600) 58.12% compared to head (94c01af) 58.44%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4659      +/-   ##
==========================================
+ Coverage   58.12%   58.44%   +0.32%     
==========================================
  Files         626       34     -592     
  Lines       53815     2079   -51736     
==========================================
- Hits        31278     1215   -30063     
+ Misses      20035      771   -19264     
+ Partials     2502       93    -2409     

Flag	Coverage Δ
unittests	68.09% <ø> (+9.97%)	⬆️

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[Future-Outlier]

+1

[Future-Outlier]

We can generate the proto without this PR, let's make it draft for other usecases.

[eapolinario]

We brought all of boilerplate in #5134.