Change location for backend files in Go

[undera]

Changes Proposed

+Also add linter into CI +Moved static files into other dir +Removed installed releases header row

Check List

• [ ] The title of my pull request is a short description of the changes
• [ ] This PR relates to some issue:
• [ ] I have documented the changes made (if applicable)
• [ ] I have covered the changes with unit tests

[codecov-commenter]

Codecov Report

Patch coverage: 45.45% and project coverage change: -0.03 :warning:

Comparison is base (d82cfa7) 30.29% compared to head (1e195ec) 30.26%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## helm-dashboard-v2 #397 +/- ## ===================================================== - Coverage 30.29% 30.26% -0.03% ===================================================== Files 10 10 Lines 1350 1338 -12 ===================================================== - Hits 409 405 -4 + Misses 900 892 -8 Partials 41 41 ``` | [Impacted Files](https://app.codecov.io/gh/komodorio/helm-dashboard/pull/397?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=komodorio) | Coverage Δ | | |---|---|---| | [pkg/dashboard/api.go](https://app.codecov.io/gh/komodorio/helm-dashboard/pull/397?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=komodorio#diff-cGtnL2Rhc2hib2FyZC9hcGkuZ28=) | `60.86% <45.45%> (+1.91%)` | :arrow_up: |

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