cmake: Use SECP256K1_COVERAGE option instead of CMAKE_BUILD_TYPE=Coverage #1291

1. 
   hebasto commented at 10:42 pm on April 29, 2023: member

   Providing -DCMAKE_BUILD_TYPE=Coverage does not work for multi-config generators.

   For example:

   0$ cmake -S . -B ../build -G "Ninja Multi-Config"
   1$ cmake --build ../build --config Coverage
   

   still builds the tests binary.

   This PR:

   • fixes this issue
   • is based on the in-person discussion during the recent CoreDev
   • is an alternative to #1251

   The last commit addresses that comment.

2. 
   hebasto commented at 12:36 pm on June 1, 2023: member

   Friendly ping @theuni :)
3. 
   theuni commented at 7:12 pm on June 23, 2023: contributor

   Sorry for the missed ping.

   Concept ACK as discussed in Dublin. Will review next week.

4. real-or-random added the label build on Jun 26, 2023
5. cmake: Add `ProcessConfigurations.cmake` module 014e063a10
6. cmake: Use `SECP256K1_COVERAGE` instead of `CMAKE_BUILD_TYPE=Coverage`

   This change fixes coverage-enabled builds for multi-configuration
   generators, e.g., "Ninja Multi-Config".

   4b3bd66540
7. autotools, docs: Adjust help string for `--enable-coverage` option 94dd0c0b99
8. hebasto force-pushed on Jul 2, 2023
9. 
   hebasto commented at 3:56 pm on July 2, 2023: member

   Rebased.
10. hebasto referenced this in commit 92e4391161 on Sep 13, 2023
11. hebasto marked this as a draft on May 7, 2024
12. 
    hebasto commented at 3:15 pm on August 18, 2024: member

    Closing in favour of #1592.
13. hebasto closed this on Aug 18, 2024

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hebasto theuni

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