Added support for dot notation member access syntax (`parent.field`)

[ByteWolf-dev]

What type of change does this PR perform?

• [ ] Info or documentation change (Non-breaking change that updates repo info files (e.g. README.md, CONTRIBUTING.md, etc.) or online documentation)
• [ ] Website (Change that changes the design or functionality of the websites or docs)
• [ ] Development or internal changes (These changes do not add new features or fix bugs, but update the code in other ways)
• [ ] Bug fix (Non-breaking change which fixes an issue)
• [x] New feature (Non-breaking change which adds functionality)
• [ ] Breaking change (Major bug fix or feature that would cause existing functionality not to work as expected.)
• [ ] Requires a documentation update, as it changes language or compiler behaviour

Summary

Implemented support for dot notation so that object properties can be accessed.

Closes #67

Detailed Changelog

Added

• Support for dot notation for accessing properties of objects. (#67)

Does this PR create new warnings?

None.

Linked issues or PRs

• [x] #67

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 78.46154% with 14 lines in your changes missing coverage. Please review.

Project coverage is 84.54%. Comparing base (bb7dfd9) to head (e6c11bb).

Files	Patch %	Lines
...re/src/compiler/semantics/analyser/type-checker.ts	60.00%	5 Missing and 1 partial :warning:
.../core/src/compiler/semantics/types/built-in/obj.ts	40.00%	6 Missing :warning:
...mber-access-expression/member-access-expression.ts	71.42%	1 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev-next #678 +/- ## ============================================ + Coverage 84.00% 84.54% +0.53% ============================================ Files 270 271 +1 Lines 4514 4555 +41 Branches 481 489 +8 ============================================ + Hits 3792 3851 +59 + Misses 583 567 -16 + Partials 139 137 -2 ```

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