Initial implementation of parseCrashes() (#1)

* Initial implementation of parseCrashes().

* Removed identification of hardware platforms. Removed eslint exceptions. Refactored code based on PR comments.

* Improved stack trace parsing and added tests for it.

* Removed unnecesary loop.

* Turned off linter rule @typescript-eslint/no-loop-func

* Renamed StackTraceStep to StackFrame

* Replaced `StackFrame`'s `pkgLocation` and `srcLocation` for `reference` which is a pointer to a `CrashlogFile.references` entry.

* fix stack frames parsing coverage

.eslintrc.js

@@ -84,6 +84,7 @@ module.exports = {
         '@typescript-eslint/typedef': 'off',
         '@typescript-eslint/unbound-method': 'off',
         '@typescript-eslint/unified-signatures': 'off',
+        '@typescript-eslint/no-loop-func': 'off',
         'array-bracket-newline': 'off',
         'array-element-newline': 'off',
         'array-type': 'off',