[ID-75] Camera preview screen

[codecov[bot]]

Codecov Report

Patch coverage: 94.93% and project coverage change: +0.40 :tada:

Comparison is base (fee0852) 86.14% compared to head (bb3275b) 86.55%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #166 +/- ## ========================================== + Coverage 86.14% 86.55% +0.40% ========================================== Files 71 74 +3 Lines 2281 2380 +99 ========================================== + Hits 1965 2060 +95 - Misses 316 320 +4 ``` | [Impacted Files](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None) | Coverage Δ | | |---|---|---| | [lib/features/home/widgets/google\_map.dart](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-bGliL2ZlYXR1cmVzL2hvbWUvd2lkZ2V0cy9nb29nbGVfbWFwLmRhcnQ=) | `48.08% <0.00%> (-0.27%)` | :arrow_down: | | [lib/features/camera/camera\_screen.dart](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-bGliL2ZlYXR1cmVzL2NhbWVyYS9jYW1lcmFfc2NyZWVuLmRhcnQ=) | `95.45% <95.45%> (ø)` | | | [lib/features/camera/preview\_screen.dart](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-bGliL2ZlYXR1cmVzL2NhbWVyYS9wcmV2aWV3X3NjcmVlbi5kYXJ0) | `95.45% <95.45%> (ø)` | | | [lib/features/camera/widgets/buttons.dart](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None#diff-bGliL2ZlYXR1cmVzL2NhbWVyYS93aWRnZXRzL2J1dHRvbnMuZGFydA==) | `100.00% <100.00%> (ø)` | | ... and [2 files with indirect coverage changes](https://app.codecov.io/gh/suesitran/interactive_diary/pull/166/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=None)

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