perf: Cache `OperationPlan` creation

[tusharmath]

Currently for each request we create an OperationPlan which affects performance. We wish to add some caching capabilities here to ensure that query plan is created only once per request upto a certain limit.

Technical Requirements

• Don't add additional libraries to implementing caching.
• Cache should evict automatically if its full.
• Keep the cache size hard coded to 100 queries for now.
• Cache key will the unparsed query string.
• Test Coverage should not drop.

[tusharmath]

/bounty 200

[algora-pbc[bot]]

💎 $200 bounty • Tailcall Inc.

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