Optimize type selector by using pattern match

[ypconstante]

Today the namespace and type matching use String.split to get the namespace and type of an element.
Using pattern matching instead of String.split provides a significant performance improvement, bringing the type selector performance closer to the id selector.

##### With input big #####
Name                             ips        average  deviation         median         99th %
id                            477.46        2.09 ms    ±20.92%        1.91 ms        3.45 ms
tag name (type) (pr)          384.54        2.60 ms    ±24.84%        2.31 ms        4.64 ms
tag name (type) (main)        158.85        6.30 ms    ±13.58%        6.04 ms        9.55 ms

Comparison: 
id                            477.46
tag name (type) (pr)          384.54 - 1.24x slower +0.51 ms
tag name (type) (main)        158.85 - 3.01x slower +4.20 ms

Memory usage statistics:

Name                      Memory usage
id                             1.87 MB
tag name (type) (pr)           2.38 MB - 1.27x memory usage +0.51 MB
tag name (type) (main)         2.32 MB - 1.24x memory usage +0.44 MB

**All measurements for memory usage were the same**

##### With input medium #####
Name                             ips        average  deviation         median         99th %
id                            1.63 K      614.22 μs    ±18.49%      585.52 μs     1119.25 μs
tag name (type) (pr)          1.42 K      704.90 μs    ±18.72%      665.53 μs     1316.34 μs
tag name (type) (main)        0.49 K     2021.96 μs    ±14.88%     1922.66 μs     3115.66 μs

Comparison: 
id                            1.63 K
tag name (type) (pr)          1.42 K - 1.15x slower +90.68 μs
tag name (type) (main)        0.49 K - 3.29x slower +1407.73 μs

Memory usage statistics:

Name                      Memory usage
id                           621.45 KB
tag name (type) (pr)         828.10 KB - 1.33x memory usage +206.66 KB
tag name (type) (main)       771.63 KB - 1.24x memory usage +150.19 KB

**All measurements for memory usage were the same**

##### With input small #####
Name                             ips        average  deviation         median         99th %
id                            7.70 K      129.89 μs    ±21.73%      118.59 μs      255.17 μs
tag name (type) (pr)          7.13 K      140.24 μs    ±20.30%      128.30 μs      263.55 μs
tag name (type) (main)        2.50 K      400.29 μs    ±18.44%      369.09 μs      712.48 μs

Comparison: 
id                            7.70 K
tag name (type) (pr)          7.13 K - 1.08x slower +10.35 μs
tag name (type) (main)        2.50 K - 3.08x slower +270.40 μs

Memory usage statistics:

Name                      Memory usage
id                           127.27 KB
tag name (type) (pr)         165.11 KB - 1.30x memory usage +37.84 KB
tag name (type) (main)       156.77 KB - 1.23x memory usage +29.50 KB

[philss]

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