Merges extensions into one page

[arcbtc]

Gets rid of "Manage Extensions" page and merges into "Extensions"

Check admin here https://extdemo.satoshigo.app/extensions?usr=2f1c28dd6ce44f7884edde1c8269b3c1

Extra

• merge Manage Extensions into Extensions
• check if the extension version is compatible with the LNbits version
  • do not allow install if the versions are incompatible (check on both back-end and front-end)
  • new field for minimum required LNbits version: "min_lnbits_version". And for release warning: warning

inextensions.json

        {
            "id": "watchonly",
            "repo": "https://github.com/lnbits/watchonly",
            "name": "Onchain Wallet",
            "version": "0.2.1",
            "min_lnbits_version": "0.10.7",
            "warning": "It is RECOMMENDED to set this extension as admin-only. Anyone with acceess can create any number of relays!",
            ...
        },

or in config.json:

{
  "name": "Onchain Wallet",
  "short_description": "Onchain watch only wallets",
  "tile": "/watchonly/static/bitcoin-wallet.png",
  "min_lnbits_version": "10.8",
  "warning": "This is NOT the official repo",
  "contributors": ["arcbtc", "motorina0"]
}

• show error message on the UI

  • 

• show warning message on the UI

  • 

• show New Version when a new version is available

  • 

• i18n text in extensions.html

Tests

• only admins can install, uninstall, upgrade, activate and deactivate extensions (regular users are not allowed)
• installed extensions show their version on the card
• setting the min_lnbits_version to a future LNbits version will not allow the installation
  • extension.json example [here] (https://github.com/motorina0/lnbits-extensions/blob/main/extensions.json#L355)
  • config.json (GitHub release) example here
  • note: use the Raw path
• setting the min_lnbits_version to a lower version (or empty) must allow the install
• setting the warning field in the extensions.json or in the config.json will show the when the release is expanded
• if a new version of an extension is added then the New Version badge is displayed

[codecov-commenter]

Codecov Report

Merging #1656 (fbc4666) into main (95071eb) will increase coverage by 0.38%.
The diff coverage is 47.61%.

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@@            Coverage Diff             @@
##             main    #1656      +/-   ##
==========================================
+ Coverage   48.43%   48.81%   +0.38%     
==========================================
  Files          47       47              
  Lines        7047     7092      +45     
==========================================
+ Hits         3413     3462      +49     
+ Misses       3634     3630       -4     

Impacted Files	Coverage Δ
lnbits/core/services.py	39.34% <0.00%> (ø)
lnbits/core/views/api.py	37.12% <16.66%> (-0.55%)	⬇️
lnbits/core/views/generic.py	51.87% <50.00%> (+7.60%)	⬆️
lnbits/extension_manager.py	54.59% <55.31%> (+7.97%)	⬆️
lnbits/settings.py	86.89% <100.00%> (+0.06%)	⬆️

... and 3 files with indirect coverage changes

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[arcbtc]

Just checked and this is a different bug, for some reason descriptions are missing for some extensions

[motorina0]

IMO the features enable+activate+open and disable+uninstall are not clear enough.

@arbadacarbaYK thanks for the input. This is a pretty big change (UI wise). It can be discussed in a different PR/issue. (not included in this PR)