feat: add rules postman.format.after, yapi.format.after

[tangcent]

yapi.format.after demo:

            path.multi=all
            yapi.format.after=groovy:```
                if(url.contains("/admin")){
                    item["title"] = "[admin]"+item["title"]
                    item["markdown"] = "[admin]"+item["markdown"]
                    item["desc"] = "[admin]"+item["desc"]
                }
            ```

postman.format.after demo:

            path.multi=all
            postman.format.after=groovy:```
                if(url.contains("/admin")){
                    item["name"] = "[admin]"+item["name"]
                    item["request"]["description"] = "[admin]"+item["request"]["description"]
                }
            ```

---

close #1026

[codecov]

Codecov Report

Merging #1033 (1942cfd) into master (62424b4) will increase coverage by 0.299%.
The diff coverage is 80.000%.

Additional details and impacted files

@@               Coverage Diff               @@
##              master     #1033       +/-   ##
===============================================
+ Coverage     62.000%   62.300%   +0.299%     
- Complexity      2251      2257        +6     
===============================================
  Files            243       244        +1     
  Lines          11829     11854       +25     
  Branches        2918      2925        +7     
===============================================
+ Hits            7334      7385       +51     
+ Misses          2945      2910       -35     
- Partials        1550      1559        +9     

Flag	Coverage Δ
unittests	62.300% <80.000%> (+0.299%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
...idea/plugin/api/export/core/ClassExportRuleKeys.kt	100.000% <ø> (ø)
...ea/plugin/api/export/postman/PostmanApiExporter.kt	32.432% <0.000%> (ø)
...gcent/idea/plugin/api/export/yapi/YapiFormatter.kt	59.351% <52.381%> (+2.458%)	⬆️
...idea/plugin/api/export/postman/PostmanFormatter.kt	69.655% <78.947%> (+3.302%)	⬆️
...ent/idea/plugin/settings/EnumProcessInitializer.kt	83.333% <83.333%> (+0.725%)	⬆️
...plugin/api/export/postman/PostmanExportRuleKeys.kt	100.000% <100.000%> (ø)
...in/api/export/postman/PostmanFormatFolderHelper.kt	76.471% <100.000%> (ø)
...pi/export/postman/PostmanRequestBuilderListener.kt	66.667% <100.000%> (ø)
.../plugin/api/export/yapi/YapiClassExportRuleKeys.kt	100.000% <100.000%> (ø)

... and 5 files with indirect coverage changes

---

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