Adding back SalesforceSDK's bootconfig.xml

[wmathurin]

• that way templates will compile without having to run SalesforceMobileSDK-Android's install.sh
• consumer key / callback should NOT be inserted in there - they should be inserted in the application's bootconfig

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.55%. Comparing base (c4e2e61) to head (c422f29).
⚠️ Report is 4 commits behind head on dev.

Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #2843      +/-   ##
============================================
+ Coverage     64.46%   64.55%   +0.08%     
- Complexity     2912     2925      +13     
============================================
  Files           222      222              
  Lines         17288    17323      +35     
  Branches       2464     2471       +7     
============================================
+ Hits          11144    11182      +38     
+ Misses         4937     4936       -1     
+ Partials       1207     1205       -2     

Components	Coverage Δ
Analytics	47.92% <ø> (ø)
SalesforceSDK	59.03% <100.00%> (+0.18%)	⬆️
Hybrid	59.05% <ø> (ø)
SmartStore	78.20% <ø> (ø)
MobileSync	81.68% <ø> (ø)
React	52.36% <ø> (ø)
see 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.