more improvements for Rust bindgen

[chenyan-dfinity]

• Bindgen for a subset of methods
• Use Context struct for merge_config
• Report unused paths
• Map variant { Ok:...; Err:... } into Result type
• Generate test for use_type
• Support selecting inlined types

[github-actions]

Name	Max Mem (Kb)	Encode	Decode
blob	4_224	20_459_333	12_083_390
btreemap	74_496	4_504_502_366 ($\textcolor{red}{0.00\%}$)	15_722_251_218 ($\textcolor{red}{0.00\%}$)
nns	192	2_279_356	12_618_201 ($\textcolor{green}{-0.05\%}$)
nns_list_proposal	1_792	7_080_978 ($\textcolor{green}{-0.04\%}$)	187_610_734 ($\textcolor{red}{0.00\%}$)
option_list	576	7_140_480 ($\textcolor{green}{-0.01\%}$)	32_173_619 ($\textcolor{green}{-0.57\%}$)
text	6_336	28_844_842	17_838_897
variant_list	128	7_141_865 ($\textcolor{green}{-0.01\%}$)	24_423_749 ($\textcolor{green}{-0.75\%}$)
vec_int16	16_704	168_582_457	1_073_771_349

• Parser cost: 18_759_648 ($\textcolor{green}{-0.41\%}$)
• Extra args: 3_254_228

Click to see raw report

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Benchmark: blob
  total:
    instructions: 32.54 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 20.46 M (no change)
    heap_increase: 66 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 12.08 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: text
  total:
    instructions: 46.69 M (no change)
    heap_increase: 99 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 28.84 M (no change)
    heap_increase: 99 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 17.84 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: vec_int16
  total:
    instructions: 1.24 B (no change)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 168.58 M (no change)
    heap_increase: 261 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 1.07 B (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: btreemap
  total:
    instructions: 20.23 B (0.00%) (change within noise threshold)
    heap_increase: 1164 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 4.50 B (0.00%) (change within noise threshold)
    heap_increase: 257 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 15.72 B (0.00%) (change within noise threshold)
    heap_increase: 907 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: option_list
  total:
    instructions: 39.32 M (-0.47%) (change within noise threshold)
    heap_increase: 9 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 7.14 M (-0.01%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 32.17 M (-0.57%) (change within noise threshold)
    heap_increase: 9 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: variant_list
  total:
    instructions: 31.57 M (-0.58%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 7.14 M (-0.01%) (change within noise threshold)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 24.42 M (-0.75%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: nns
  total:
    instructions: 34.50 M (-0.24%) (change within noise threshold)
    heap_increase: 3 pages (no change)
    stable_memory_increase: 0 pages (no change)

  0. Parsing (scope):
    instructions: 18.76 M (-0.41%) (change within noise threshold)
    heap_increase: 2 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 2.28 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 12.62 M (-0.05%) (change within noise threshold)
    heap_increase: 1 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: nns_list_proposal
  total:
    instructions: 194.69 M (-0.00%) (change within noise threshold)
    heap_increase: 28 pages (no change)
    stable_memory_increase: 0 pages (no change)

  1. Encoding (scope):
    instructions: 7.08 M (-0.04%) (change within noise threshold)
    heap_increase: 3 pages (no change)
    stable_memory_increase: 0 pages (no change)

  2. Decoding (scope):
    instructions: 187.61 M (0.00%) (change within noise threshold)
    heap_increase: 25 pages (no change)
    stable_memory_increase: 0 pages (no change)

---------------------------------------------------

Benchmark: extra_args
  total:
    instructions: 3.25 M (no change)
    heap_increase: 0 pages (no change)
    stable_memory_increase: 0 pages (no change)

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Successfully persisted results to canbench_results.yml