feat: seperate api validator to files

[nassiharel]

This change is 

[yehiyam]

Reviewed 28 of 28 files at r1, 3 of 3 files at r2.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @nassiharel)

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core/api-server/lib/service/algorithms.js, line 140 at r1 (raw file):

    async getAlgorithm(options) {
        validator.jobs.validateName(options);

jobs?

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core/api-server/lib/service/readme.js, line 60 at r1 (raw file):

    async getAlgorithm(options) {
        const { name } = options;
        validator.jobs.validateName(options);

job?