Added intents-balance-history

[Megha-Dev-19]

• Added endpoint to return intents balances for a particular account over different time periods

{
  timestamp: number;
  date: string;
  tokens: Array<{
    token_id: string;
    symbol: string;
    icon?: string;
    balance: string;
    parsedBalance: string;
  }>;
  totalTokens: number;
};

• Updated tests to include missing endpoints and more error coverage
• Updated readme

[Megha-Dev-19]

@race-of-sloths include

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Current status: executed

Reviewer	Score
@petersalomonsen	5

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[petersalomonsen]

would it be better to have a UTC date string here ( like the format of date.toJSON() ), and rather let the client convert to the locale / timezone settings?

The way it is now, it is unclear which timezone it is.

[Megha-Dev-19]

yes I will update it, or maybe we don't need date as all, we already have timestamp, the frontend can use timestamp to show the date

[Megha-Dev-19]

The reason we use dates is for the postgress db, we store the historical data by grouping by date, so if we do by date.toJSON() it will be different for each timestamp, but we want to capture only 1 data set for each day/month/week, otherwise the dataset will be huge for all clients over time.
So I have added UTC for all timezones, and also updated in frontend to show "UTC" in the labels so it's clear.

[petersalomonsen]

@race-of-sloths score 5