Add Clear Caches menu item to login view

[wmathurin]

• Add sf__clear_caches string resource
• Implement clearCaches method using webView.clearCache(true)
• Add Clear Caches menu item to login dropdown
• Add unit and UI tests for new functionality

[codecov]

Codecov Report

❌ Patch coverage is 29.41176% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 56.05%. Comparing base (a99d2c9) to head (4e9b74a).
⚠️ Report is 5 commits behind head on dev.

Files with missing lines	Patch %	Lines
...m/salesforce/androidsdk/ui/components/LoginView.kt	33.33%	10 Missing ⚠️
...src/com/salesforce/androidsdk/ui/LoginViewModel.kt	0.00%	2 Missing ⚠️

❌ Your patch check has failed because the patch coverage (29.41%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #2752      +/-   ##
============================================
- Coverage     56.11%   56.05%   -0.07%     
+ Complexity     2488     2486       -2     
============================================
  Files           211      211              
  Lines         17239    17256      +17     
  Branches       2408     2408              
============================================
- Hits           9673     9672       -1     
- Misses         6518     6535      +17     
- Partials       1048     1049       +1     

Components	Coverage Δ
Analytics	47.92% <ø> (ø)
SalesforceSDK	43.74% <29.41%> (-0.10%)	⬇️
Hybrid	58.05% <ø> (ø)
SmartStore	78.20% <ø> (ø)
MobileSync	79.23% <ø> (ø)
React	46.94% <ø> (ø)

Files with missing lines	Coverage Δ
...src/com/salesforce/androidsdk/ui/LoginViewModel.kt	60.40% <0.00%> (-0.83%)	⬇️
...m/salesforce/androidsdk/ui/components/LoginView.kt	37.03% <33.33%> (-0.58%)	⬇️

... and 2 files with indirect coverage changes

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[brandonpage]

Do we want to also reload after clearing cache? I believe we do that when we clear cookies.

Should be noted that reloading will cycle the web server code verifier but I don't think that will matter.

[wmathurin]

The caller does the reload, see https://github.com/forcedotcom/SalesforceMobileSDK-Android/pull/2752/files#diff-321c03965ac0663f16817520073fbe2d6def698c5568ab388f1161c35536d069R303

NB: it's the same with clearCookies.

    open fun clearCookies() =
        CookieManager.getInstance().removeAllCookies(null)

[brandonpage]

Whoops, I missed that. Great!