feat: query batching

[amitksingh1490]

Summary:
Briefly describe the changes made in this PR.

Issue Reference(s):
Fixes #... (Replace "..." with the issue number)

Build & Testing:

• I ran cargo test successfully.
• I have run ./lint.sh --mode=fix to fix all linting issues raised by ./lint.sh --mode=check.

Checklist:

• I have added relevant unit & integration tests.
• I have updated the documentation accordingly.
• I have performed a self-review of my code.
• PR follows the naming convention of <type>(<optional scope>): <title>

[codecov]

Codecov Report

Attention: Patch coverage is 78.08219% with 16 lines in your changes missing coverage. Please review.

Project coverage is 84.12%. Comparing base (82aed52) to head (c52a3ea).

Files	Patch %	Lines
src/core/async_graphql_hyper.rs	60.52%	15 Missing ⚠️
src/core/app_context.rs	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2166      +/-   ##
==========================================
- Coverage   84.15%   84.12%   -0.04%     
==========================================
  Files         212      212              
  Lines       19982    20054      +72     
==========================================
+ Hits        16816    16870      +54     
- Misses       3166     3184      +18     

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[github-actions]

Bencher

Report	Wed, June 12, 2024 at 07:55:26 UTC
Project	tailcall
Branch	2166/merge
Testbed	benchmarking-runner

Click to view all benchmark results

Benchmark	Latency	Latency Results nanoseconds (ns) | (Δ%)	Latency Upper Boundary nanoseconds (ns) | (%)
from_json_bench	✅ (view plot)	7,238,700.00 (+1.58%)	7,271,842.45 (99.54%)
group_by	✅ (view plot)	532.84 (-7.66%)	646.76 (82.39%)
input/args.missing	✅ (view plot)	23.03 (-4.46%)	26.90 (85.59%)
input/args.nested.existing	✅ (view plot)	42.48 (-11.75%)	63.06 (67.36%)
input/args.nested.missing	✅ (view plot)	38.27 (+0.36%)	40.49 (94.52%)
input/args.root	✅ (view plot)	38.18 (-14.06%)	59.81 (63.84%)
input/headers.existing	✅ (view plot)	32.90 (+3.86%)	33.70 (97.61%)
input/headers.missing	✅ (view plot)	31.57 (+2.70%)	33.52 (94.17%)
input/value.missing	✅ (view plot)	23.31 (-0.57%)	24.92 (93.57%)
input/value.nested.existing	✅ (view plot)	40.97 (-1.46%)	44.89 (91.26%)
input/value.nested.missing	✅ (view plot)	37.09 (+1.40%)	38.58 (96.14%)
input/value.root	✅ (view plot)	37.18 (-2.60%)	41.52 (89.53%)
input/vars.existing	✅ (view plot)	8.14 (+2.98%)	8.93 (91.13%)
input/vars.missing	✅ (view plot)	11.79 (+24.50%)	12.76 (92.40%)
test_batched_body	✅ (view plot)	2,690.10 (-99.49%)	2,171,510.02 (0.12%)
test_batched_body #2	✅ (view plot)	1,704,900.00 (-0.23%)	1,837,490.94 (92.78%)
test_data_loader	✅ (view plot)	476,100.00 (+1.39%)	486,955.74 (97.77%)
test_handle_request	✅ (view plot)	149,580.00 (-4.95%)	174,937.56 (85.50%)
test_http_execute_method	✅ (view plot)	18,098.00 (-1.26%)	19,440.54 (93.09%)
with_mustache_expressions	✅ (view plot)	1,143.00 (-2.05%)	1,230.46 (92.89%)
with_mustache_literal	✅ (view plot)	670.21 (-7.14%)	775.32 (86.44%)

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