Docs: Add docs to repo

[imatwawana]

Adds docs migrated from Volkov to Grafana Business Input panel plugin repo

[zoltanbedi]

A nit and a question.

[CLAassistant]

All committers have signed the CLA.

[github-actions]

😢 zizmor failed with exit code 14.

Expand for full output

error[unpinned-uses]: unpinned action reference
  --> ./.github/workflows/ci.yml:67:9
   |
67 |         uses: codecov/codecov-action@v4
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ action is not pinned to a hash (required by blanket policy)
   |
   = note: audit confidence → High

error[unpinned-uses]: unpinned action reference
  --> ./.github/workflows/codeql-analysis.yml:45:9
   |
45 |         uses: github/codeql-action/init@v2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ action is not pinned to a hash (required by blanket policy)
   |
   = note: audit confidence → High

error[unpinned-uses]: unpinned action reference
  --> ./.github/workflows/codeql-analysis.yml:58:9
   |
58 |         uses: github/codeql-action/autobuild@v2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ action is not pinned to a hash (required by blanket policy)
   |
   = note: audit confidence → High

error[unpinned-uses]: unpinned action reference
  --> ./.github/workflows/codeql-analysis.yml:71:9
   |
71 |         uses: github/codeql-action/analyze@v2
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ action is not pinned to a hash (required by blanket policy)
   |
   = note: audit confidence → High

38 findings (17 ignored, 17 suppressed): 0 informational, 0 low, 0 medium, 4 high

[zoltanbedi]

@imatwawana I have a PR that fixes the zizmor check once that is merged we can merge your docs pr as well.