Fix iS hash outputs

[abcSup]

• Refactor bin_sections function
• Add filter_hash_string function

Your checklist for this pull request

• I've read the guidelines for contributing to this repository
• I made sure to follow the project's coding style
• I've added tests that prove my fix is effective or that my feature works (if possible)
• I've updated the documentation and the radare2 book with the relevant information (if needed)

Detailed description

Previously, iS entropy does not include entropy outputs as reported by @apasamar on Telegram. This PR is to include every hash option (entropy,sha1,...) in iS table outputs.

[0x080483d0]> iS entropy
[Sections]

nth paddr        size vaddr       vsize perm entropy    name
――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――
0   0x00000000    0x0 0x00000000    0x0 ---- 0.00000000 
1   0x00000154   0x13 0x08048154   0x13 -r-- 3.68188080 .interp
2   0x00000168   0x20 0x08048168   0x20 -r-- 1.74868984 .note.ABI_tag
3   0x00000188   0x38 0x08048188   0x38 -r-- 1.23442903 .hash
4   0x000001c0   0x20 0x080481c0   0x20 -r-- 1.99254169 .gnu.hash
5   0x000001e0   0x90 0x080481e0   0x90 -r-- 1.56755604 .dynsym
6   0x00000270   0x5f 0x08048270   0x5f -r-- 4.38707564 .dynstr
7   0x000002d0   0x12 0x080482d0   0x12 -r-- 1.19417373 .gnu.version
8   0x000002e4   0x20 0x080482e4   0x20 -r-- 1.66055053 .gnu.version_r
9   0x00000304    0x8 0x08048304    0x8 -r-- 2.75000000 .rel.dyn
10  0x0000030c   0x30 0x0804830c   0x30 -r-- 2.94082791 .rel.plt
11  0x0000033c   0x17 0x0804833c   0x17 -r-x 3.46241535 .init
12  0x00000354   0x70 0x08048354   0x70 -r-x 3.51876869 .plt
13  0x000003d0  0x274 0x080483d0  0x274 -r-x 5.76534324 .text
14  0x00000644   0x1a 0x08048644   0x1a -r-x 3.79621760 .fini
15  0x00000660   0x55 0x08048660   0x55 -r-- 4.59175306 .rodata
16  0x000006b8    0x4 0x080486b8    0x4 -r-- 0.00000000 .eh_frame
17  0x00000f0c    0x8 0x08049f0c    0x8 -rw- 1.00000000 .ctors
18  0x00000f14    0x8 0x08049f14    0x8 -rw- 1.00000000 .dtors
19  0x00000f1c    0x4 0x08049f1c    0x4 -rw- 0.00000000 .jcr
20  0x00000f20   0xd0 0x08049f20   0xd0 -rw- 2.82161069 .dynamic
21  0x00000ff0    0x4 0x08049ff0    0x4 -rw- 0.00000000 .got
22  0x00000ff4   0x24 0x08049ff4   0x24 -rw- 2.98068211 .got.plt
23  0x00001018    0xc 0x0804a018    0xc -rw- 1.58496250 .data
24  0x00001024    0x0 0x0804a024    0x4 -rw- 0.00000000 .bss
25  0x00001024  0x1b9 0x00000000  0x1b9 ---- 4.50015849 .comment
26  0x000011dd   0xdb 0x00000000   0xdb ---- 4.21638420 .shstrtab
27  0x00001740  0x460 0x00000000  0x460 ---- 3.06854806 .symtab
28  0x00001ba0  0x248 0x00000000  0x248 ---- 4.85613827 .strtab

[radare]

awesome!