performance: improve performance of `RequestTemplate`

[tusharmath]

The set_body method can be optimized for the case of ApplicationXWwwFormUrlencoded. Currently, it renders the mustache template as a string, then converts it to serde_json and then again converts it to a form_url_encoded value.

Ideally, there it shouldn't take such redundant steps to make this transformation.

Technical Requirements

• Write idiomatic rust code while making an optimization
• Write criterion benchmarks to compare the before and after performance.

[tusharmath]

/bounty 200$

[algora-pbc[bot]]

💎 $200 bounty • Tailcall Inc.

Steps to solve:

1. Start working: Comment /attempt #934 with your implementation plan
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Attempt	Started (GMT+0)	Solution
🟢 @shivamklr	Mar 12, 2024, 10:49:44 AM	WIP

[SOUMOJIT-CHAKRABORTY]

Hi! @tusharmath I want to work on the issue, can you assign it to me.

[guhitb]

@tusharmath Can I be assigned to this?

[tusharmath]

Sure go ahead

[shivamklr]

/attempt #934

[algora-pbc[bot]]

@shivamklr: Another person is already attempting this issue. Please don't start working on this issue unless you were explicitly asked to do so.

[ologbonowiwi]

Hey @guhitb, can I take up from where you stopped on #1084?