docs: add badges and update issue template

[jaybxyz]

Description

closes: #40

Tasks

• add codcov badge
• add godoc badge
• update issue/pr template Bullet Points -> Tasks

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Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Appropriate labels applied
• Targeted PR against correct branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the module structure standards.
• Wrote unit and integration
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Re-reviewed Files changed in the Github PR explorer
• Review Codecov Report in the comment section below once CI passes

[codecov]

Codecov Report

Merging #42 (b2a68ba) into master (fd3bac2) will not change coverage.
The diff coverage is n/a.

❗ Current head b2a68ba differs from pull request most recent head b6f1ee7. Consider uploading reports for the commit b6f1ee7 to get more accurate results

@@           Coverage Diff           @@
##           master      #42   +/-   ##
=======================================
  Coverage   79.85%   79.85%           
=======================================
  Files          12       12           
  Lines         283      283           
=======================================
  Hits          226      226           
  Misses         42       42           
  Partials       15       15           

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