Add devices to legend

[ZzEeKkAa]

Show devices for every postfix:

Report for 2023-06-20 20:27:02 run
==================================
Legend
======
        postfix                            description                               device
0  dpnp          dpnp                                   Intel(R) Graphics [0x46a6]
1  numba_dpex_k  Numba-dpex kernel                      Intel(R) Graphics [0x46a6]
2  numba_dpex_n  Numba-dpex NumPy API                   Intel(R) Graphics [0x46a6]
3  numba_dpex_p  Numba-dpex prange                      Intel(R) Graphics [0x46a6]
4  numba_n       Numba nopython                         12th Gen Intel(R) Core(TM) i7-1270P
5  numba_np      Numba nopython, Parallel=True          12th Gen Intel(R) Core(TM) i7-1270P
6  numba_npr     Numba nopython, Parallel=True, prange  12th Gen Intel(R) Core(TM) i7-1270P
7  numpy         NumPy                                  12th Gen Intel(R) Core(TM) i7-1270P
8  python        Python                                 12th Gen Intel(R) Core(TM) i7-1270P

Summary of current implementation
=================================
  input_size          benchmark problem_preset              dpnp      numba_dpex_k      numba_dpex_n      numba_dpex_p           numba_n       numba_np      numba_npr          numpy         python
0       10MB      black_scholes              S           Success           Success  Failed Execution  Failed Execution           Success        Success        Success        Success        Success
1       40KB             dbscan              S     Unimplemented           Success     Unimplemented  Failed Execution           Success  Unimplemented        Success  Unimplemented        Success
2        4KB             gpairs              S  Failed Execution  Failed Execution     Unimplemented  Failed Execution           Success  Unimplemented        Success        Success  Unimplemented
3       48KB             kmeans              S     Unimplemented           Success     Unimplemented  Failed Execution           Success  Unimplemented        Success  Unimplemented        Success
4      152KB                knn              S     Unimplemented           Success     Unimplemented  Failed Execution     Unimplemented  Unimplemented        Success  Unimplemented        Success
5      512KB            l2_norm              S           Success           Success  Failed Execution  Failed Execution           Success        Success        Success        Success  Unimplemented
6        4MB  pairwise_distance              S           Success           Success  Failed Execution  Failed Execution     Unimplemented        Success        Success        Success  Unimplemented
7      512KB                pca              S  Failed Execution     Unimplemented  Failed Execution     Unimplemented  Failed Execution        Success  Unimplemented        Success  Unimplemented
8        3MB              rambo              S           Success           Success  Failed Execution  Failed Execution           Success        Success        Success        Success        Success
Summary of current implementation
=================================
  input_size          benchmark problem_preset     dpnp numba_dpex_k numba_dpex_n numba_dpex_p numba_n numba_np numba_npr    numpy     python
0       10MB      black_scholes              S   39.8ms       5.99ms          n/a          n/a  22.3ms   3.89ms    3.95ms  21.73ms  2590.85ms
1       40KB             dbscan              S      n/a      17.66ms          n/a          n/a  8.05ms      n/a    3.16ms      n/a     6.55ms
2        4KB             gpairs              S      n/a          n/a          n/a          n/a  0.27ms      n/a    0.16ms   1.05ms        n/a
3       48KB             kmeans              S      n/a     254.33ms          n/a          n/a  1.23ms      n/a    1.08ms      n/a   231.86ms
4      152KB                knn              S      n/a      18.85ms          n/a          n/a     n/a      n/a    1.45ms      n/a  4660.72ms
5      512KB            l2_norm              S   2.85ms       5.08ms          n/a          n/a   0.1ms   0.14ms    0.11ms   0.34ms        n/a
6        4MB  pairwise_distance              S  15.98ms       7.51ms          n/a          n/a     n/a   1.43ms    0.77ms    1.2ms        n/a
7      512KB                pca              S      n/a          n/a          n/a          n/a     n/a   1.79ms       n/a   1.21ms        n/a
8        3MB              rambo              S  17.19ms       5.89ms          n/a          n/a  3.44ms   0.89ms    0.81ms   0.91ms   633.28ms

Implementations now are getting stored in the database and slightly refactored reporter to remove duplicate code.

• Have you provided a meaningful PR description?
• Have you added a test, reproducer or referred to an issue with a reproducer?
• Have you tested your changes locally for CPU and GPU devices?
• Have you made sure that new changes do not introduce compiler warnings?
• If this PR is a work in progress, are you filing the PR as a draft?

Fixes #187
Closes #184

[diptorupd]

Thank you!