feat: huge refactor on persistent apis

[kiaking]

This PR adds many braking changes that refactors how persistent methods such as insert and update works.

Type of PR:

• Bugfix
• Feature
• Refactor
• Code style update
• Build-related changes
• Test
• Documentation
• Other, please describe:

Breaking changes:

• No
• Yes

Details

It contains following changes.

• All persistent methods are now synchronous. Not async anymore.
• All persistent methods returns either Model or Model[].
• The save method is the only method that normalizes the given data. insert, fresh, update will not normalize data anymore.
• Removing add, revise, replace method. Use insert, update, fresh instead.
• the update method now only works with query constraints. userRepo.where('name', 'John').update({ name: 'Jane' }).

[codecov]

Codecov Report

Merging #70 (0ebead6) into master (17d202d) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master       #70   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           36        36           
  Lines         1157      1122   -35     
  Branches       163       157    -6     
=========================================
- Hits          1157      1122   -35     

Impacted Files	Coverage Δ
src/schema/Schema.ts	100.00% <ø> (ø)
src/connection/Connection.ts	100.00% <100.00%> (ø)
src/interpreter/Interpreter.ts	100.00% <100.00%> (ø)
src/modules/Mutations.ts	100.00% <100.00%> (ø)
src/query/Query.ts	100.00% <100.00%> (ø)
src/repository/Repository.ts	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 17d202d...0ebead6. Read the comment docs.