Start migrating imported functions to the new definition style

[kateinoigakukun]

Use of different function names for C-name and Wasm's import name is a bit confusing. Also use of unprefixed function names in the C code is not a good practice. This commit starts migrating imported functions to the new naming convention and removes duplicated function definitions just for IDE support by using macro.

[github-actions[bot]]

Time Change: -394ms (4%)

Total Time: 9,416ms

Test name	Duration	Change
Serialization/JavaScript function call through Wasm import	20ms	-1ms (5%)	✅
Serialization/Swift String to JavaScript with assignment	387ms	-33ms (8%)	✅
Serialization/Swift String to JavaScript with call	985ms	-50ms (5%)	✅
Serialization/JavaScript String to Swift String	3,698ms	-259ms (7%)	✅

View Unchanged

| Test name | Duration | Change | | :--- | :---: | :---: | | Serialization/JavaScript function call through Wasm import with int | 15ms | +1ms | | Serialization/JavaScript function call from Swift | 104ms | +0ms | | Serialization/Swift Int to JavaScript with assignment | 320ms | -14ms (4%) | | Serialization/Swift Int to JavaScript with call | 946ms | -36ms (3%) | | Serialization/JavaScript Number to Swift Int | 300ms | -11ms (3%) | | Object heap/Increment and decrement RC | 2,629ms | +15ms (0%) |

View Baselines

| Test name | Duration | | :--- | :---: | | Serialization/Call JavaScript function directly | 4ms | | Serialization/Assign JavaScript number directly | 2ms | | Serialization/Call with JavaScript number directly | 3ms | | Serialization/Write JavaScript string directly | 2ms | | Serialization/Call with JavaScript string directly | 2ms |