Updated issue templates from .github.

[dblock]

Signed-off-by: dblock [email protected]

Description

Coming from opensearch-project/.github#64, updated issue templates for bugs and features.

Check List

• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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[codecov-commenter]

Codecov Report

Merging #662 (b0c31f7) into main (715c22f) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #662   +/-   ##
=========================================
  Coverage     59.46%   59.46%           
  Complexity      283      283           
=========================================
  Files           236      236           
  Lines          7735     7735           
  Branches       1552     1552           
=========================================
  Hits           4600     4600           
  Misses         2963     2963           
  Partials        172      172           

Flag	Coverage Δ
dashboards-observability	52.85% <ø> (ø)
opensearch-observability	76.60% <ø> (ø)

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