chore: Add `SavePoint` type to `SavePointStackImpl`

[Neeharika-Sompalli]

Related to #13889

• Added a SavePoint Object inside SavePointStackImpl. This will store state for the save point and the records created in teh save point
• Currently the records are not used from that object.
• It will be updated and used in a future PR to replace all the places we are using RecordListBuilder to add records

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Node: HAPI Test (Restart) Results

3 tests   2 :white_check_mark:  3m 24s :stopwatch: 3 suites  0 :zzz: 3 files    1 :x:

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Results for commit 710f0142.

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Node: HAPI Test (Node Death Reconnect) Results

3 tests   3 :white_check_mark:  6m 10s :stopwatch: 3 suites  0 :zzz: 3 files    0 :x:

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Node: HAPI Test (Token) Results

 22 files   22 suites   6m 35s :stopwatch: 273 tests 273 :white_check_mark: 0 :zzz: 0 :x: 351 runs  351 :white_check_mark: 0 :zzz: 0 :x:

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Node: HAPI Test (Crypto) Results

 24 files   24 suites   11m 43s :stopwatch: 364 tests 364 :white_check_mark: 0 :zzz: 0 :x: 371 runs  371 :white_check_mark: 0 :zzz: 0 :x:

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Node: HAPI Test (Misc) Results

 51 files   51 suites   21m 12s :stopwatch: 357 tests 357 :white_check_mark: 0 :zzz: 0 :x: 375 runs  375 :white_check_mark: 0 :zzz: 0 :x:

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Node: HAPI Test (Time Consuming) Results

19 tests   19 :white_check_mark:  23m 49s :stopwatch:  4 suites   0 :zzz:  4 files     0 :x:

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Node: HAPI Test (Smart Contract) Results

 72 files   72 suites   23m 15s :stopwatch: 617 tests 617 :white_check_mark: 0 :zzz: 0 :x: 671 runs  671 :white_check_mark: 0 :zzz: 0 :x:

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Node: Unit Test Results

  1 540 files    1 540 suites   2h 33m 38s :stopwatch: 115 765 tests 115 704 :white_check_mark: 59 :zzz: 2 :x: 124 080 runs  124 019 :white_check_mark: 59 :zzz: 2 :x:

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Codecov Report

Attention: Patch coverage is 69.56522% with 7 lines in your changes missing coverage. Please review.

Project coverage is 58.14%. Comparing base (9973fae) to head (5fb685e). Report is 95 commits behind head on develop.

Files	Patch %	Lines
...app/workflows/handle/stack/SavepointStackImpl.java	77.77%	2 Missing and 2 partials :warning:
...de/app/workflows/handle/DispatchHandleContext.java	0.00%	1 Missing :warning:
...orkflows/handle/dispatch/ChildDispatchFactory.java	0.00%	1 Missing :warning:
...dle/record/SingleTransactionRecordBuilderImpl.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #14106 +/- ## ============================================= - Coverage 67.58% 58.14% -9.45% + Complexity 36486 22031 -14455 ============================================= Files 3732 2867 -865 Lines 149767 110050 -39717 Branches 15571 11204 -4367 ============================================= - Hits 101223 63989 -37234 + Misses 44179 42510 -1669 + Partials 4365 3551 -814 ```

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