[Android] sticky title on TimetableGrid

[ked4ma]

Issue

• close #1229

Overview (Required)

• enable show session title when scroll on TimetableGrid.

Links

• nothing

Screenshot (Optional if screenshot test is present or unrelated to UI)

Before	After

Movie (Optional)

Before	After

[github-actions[bot]]

Test Results

216 tests   216 :heavy_check_mark:  8m 0s :stopwatch:   11 suites      0 :zzz:   11 files        0 :x:

Results for commit 38623d1e.

:recycle: This comment has been updated with latest results.

[takahirom]

@ked4ma Could you add a screenshot test to check it? 🙏

[ked4ma]

sure. I'll add tests 😀

[github-actions[bot]]

Hi @ked4ma! Codes seem to be unformatted. To resolve this issue, please run ./gradlew detekt --auto-correct and fix the results of ./gradlew lintDebug.. Thank you for your contribution.

[github-actions[bot]]

Snapshot diff report

File name	Image
TimetableScreenTest. checkGridStickyTitle Shot_compare.png
TimetableScreenTest. checkGridStickyTitle Shot_2_compare.png