Fix undefined reference

[DonggeLiu]

1. Add the header file of the function-under-test in the code generation prompt.
2. Add the header file or source code file of the missing function in the code fixing prompt (C projects mostly).
3. Related instructions.

[DonggeLiu]

/gcbrun exp -n dg

[DonggeLiu]

/gcbrun exp -f -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg-1

[DonggeLiu]

/gcbrun exp -f -ns 10 -nf 5 -n dg-1

[DonggeLiu]

Strange that this works locally but not on the server:

**** Finished benchmark ada-url, bool ada_can_parse_with_base(const char *, size_t, const char *, size_t) ****
build success rate: 1.0, crash rate: 0.0, found bug: 0, max coverage: 0.18582758876287897, max line coverage diff: 0.002601156069364162
max coverage sample: /usr/local/google/home/donggeliu/Code/oss-fuzz-gen/results-2024-07-12-21-41/output-ada-url-ada_can_parse_with_base/fixed_targets/01.cc
max coverage diff sample: /usr/local/google/home/donggeliu/Code/oss-fuzz-gen/results-2024-07-12-21-41/output-ada-url-ada_can_parse_with_base/fixed_targets/01.cc
max coverage diff report: gs://oss-fuzz-gcb-experiment-run-logs/dg-curl56df3ed9-b0f1-4e4e-a02e-b1008c8f63fc.coverage

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg-2

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg-3

[DonggeLiu]

/gcbrun exp -n dg

[DonggeLiu]

/gcbrun exp -n dg-4

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg-3

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg-4

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg-5

[DonggeLiu]

/gcbrun exp -f -i -ns 10 -nf 5 -n dg

[DonggeLiu]

Increase build rate of:

1. ada_can_parse_with_base from 0 to 100%,
2. crxLoadDecodeLoop from 60% to 100%,
3. sf_open from 20% to 100%,
4. plus other random fluctuations between:
   1. https://llm-exp.oss-fuzz.com/Result-reports/scheduled/2024-07-16-daily-comparison/index.html
   2. https://llm-exp.oss-fuzz.com/Result-reports/ofg-pr/2024-07-14-465-dg-comparison/index.html

[DonggeLiu]

Some other improvements:

1. Get function header/source file when FI implements the API (function name -> function signatures for C++ projects)
2. Group the instructions based on the change needed (e.g., to fix X, do a),b),and c).
3. Add project documentation in the prompt, etc. project stb.
4. Add line breaks to make instructions in the prompt more human-readable.
5. Consider re-organizing the rule-applying logic implementation.

Other than these, this PR is in a good shape as a 1st iteration.