feat: add basic offline pwa support

[chmelevskij]

Add basic pwa support for offline use.

offline.mov

[sonarcloud]

Quality Gate failed

Failed conditions

14.0% Duplication on New Code (required ≤ 3%)

See analysis details on SonarCloud

[github-actions]

Do you want to test this code? Here you have an automated build:
Betaflight-Configurator-Android
Betaflight-Configurator-Linux
Betaflight-Configurator-macOS
Betaflight-Configurator-Windows
WARNING: It may be unstable and result in corrupted configurations or data loss. Use only for testing!

[blckmn]

AUTOMERGE: (FAIL)

• github identifies PR as mergeable -> FAIL
• assigned to a milestone -> PASS
• cooling off period lapsed -> PASS
• commit count less or equal to three -> PASS
• Don't merge label NOT found -> PASS
• at least one RN: label found -> PASS
• Tested label found -> FAIL
• assigned to an approver -> PASS
• approver count at least three -> FAIL

[nerdCopter]

looks good, but i dont know how to build PWA executable for testing.

[chmelevskij]

@nerdCopter yarn dev starts web build, visit http://localhost:8000/ and it should have basic configurator build.

Though, for full offline it needs to be https. So will look into better local setup to actually test offline. For now we'll only be able to fully test this once it's up on https://nightly.app.betaflight.com/ or https://app.betaflight.com/

[nerdCopter]

@nerdCopter yarn dev starts web build, [...]

okay , i know about yarn dev (same as yarn vite). but it seemed though you launched an "app" in the video.

i ran yan vite fine the other day, so i will approve it.

[chmelevskij]

@nerdCopter if you visit https://nightly.app.betaflight.com/ in the top right in url bar there is install button.

Screen.Recording.2024-01-10.at.06.34.58.mov

After clicking that you will need to wait for all the request to finish in the network tab

When finished you will get the following popup and that pretty much means it's ready to go