feat: Support finding an unprefixed Info.plist file

[dpogue]

Platforms affected

iOS

Motivation and Context

Currently the Info.plist file in a generated iOS project is prefixed with the project name (i.e., HelloCordova-Info.plist), and plugins have to set up their config-file/edit-config directives to use wildcards like **/*-Info.plist.

The standard way for Xcode projects is to just have Info.plist in the project, and this gets us one step closer to supporting that.

Description

• Try to find an unprefixed Info.plist, falling back to the AppName-Info.plist
• Cache the result of the Xcodeproj name to avoid repeated globs
• Streamline plist loading to avoid reading the file twice
  • This allows us to drop the read-chunks dependency in next major

Testing

Added a new test for the Info.plist behaviour. All existing tests pass.

Checklist

• [x] I've run the tests to see all new and existing tests pass
• [x] I added automated test coverage as appropriate for this change

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.70%. Comparing base (24f7fa2) to head (49e3f4c).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #212 +/- ## ========================================== + Coverage 88.40% 88.70% +0.30% ========================================== Files 20 20 Lines 1147 1160 +13 ========================================== + Hits 1014 1029 +15 + Misses 133 131 -2 ```

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