[FEAT] Add constants module in `lib_ccxr`

[elbertronnie]

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This is an attempt to split #1495 into multiple independant PRs. Dependant on #1551.

This PR adds some common enums which will be used througjout the codebase.

NOTE: Most of these enums are completely unrelated to each other and the only reason they are kept together for now is because they were kept together in C codebase. In the future when appropriate modules will be built, each of them will have to tranfered to their respective meaningful modules.

[ccextractor-bot]

CCExtractor CI platform finished running the test files on linux. Below is a summary of the test results:

Report Name	Tests Passed
Broken	13/13
CEA-708	2/14
DVB	4/7
DVD	3/3
DVR-MS	2/2
General	24/27
Hauppage	3/3
MP4	2/3
NoCC	10/10
Options	78/87
Teletext	21/21
WTV	9/13
XDS	24/34

It seems that not all tests were passed completely. This is an indication that the output of some files is not as expected (but might be according to you).

Your PR breaks these cases:

• ccextractor -autoprogram -out=srt -latin1 85271be4d2..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -latin1 1974a299f0..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -latin1 132d7df7e9..., Last passed: Never
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• ccextractor -autoprogram -out=smptett -latin1 -ucla e274a73653..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -xds -latin1 -ucla e274a73653..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -latin1 -ucla -xds b22260d065..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -ucla b22260d065..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -latin1 -xds -ucla c813e713a0..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -ucla c813e713a0..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -ucla c8dc039a88..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -ucla 53339f3455..., Last passed: Never
• ccextractor -autoprogram -out=ttxt -latin1 -ucla -xds 88cd42b89a..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -ucla 88cd42b89a..., Last passed: Never
• ccextractor -svc 1 -out=txt -nobom -noru ea83ff7bcb..., Last passed: Never
• ccextractor -svc 1 -out=txt f17524b53f..., Last passed: Never
• ccextractor -svc 1 -out=txt 80848c45f8..., Last passed: Never
• ccextractor -svc 1 -out=txt -nobom -noru b5d6aad89f..., Last passed: Never
• ccextractor -svc 1[EUC-KR] -out=txt -noru b5d6aad89f..., Last passed: Never
• ccextractor -svc 1 -out=srt da904de35d..., Last passed: Never
• ccextractor -svc 1 -out=sami da904de35d..., Last passed: Never
• ccextractor -svc 1[EUC-KR] b5d6aad89f..., Last passed: Never
• ccextractor -svc 1[EUC-KR] -noru b5d6aad89f..., Last passed: Never
• ccextractor -svc all da904de35d..., Last passed: Never
• ccextractor -svc all[EUC-KR] b5d6aad89f..., Last passed: Never
• ccextractor -svc 1,2[UTF-8],3[EUC-KR],54 -out=txt da904de35d..., Last passed: Never
• ccextractor -autoprogram -out=srt -latin1 -1 a65d39ccb3..., Last passed: Never
• ccextractor -svc 1 c83f765c66..., Last passed: Never
• ccextractor -out=spupng c83f765c66..., Last passed: Never
• ccextractor -nogt c83f765c66..., Last passed: Never
• ccextractor --fixpadding c83f765c66..., Last passed: Never
• ccextractor -noautotimeref c83f765c66..., Last passed: Never
• ccextractor -bom c83f765c66..., Last passed: Never
• ccextractor --capfile /repository/Dictionary/MattS_dictionary.txt c83f765c66..., Last passed: Never
• ccextractor -in=es dc7169d7c4..., Last passed: Never
• ccextractor -autoprogram -out=srt -bom -latin1 8849331dda..., Last passed: Never
• ccextractor -stdout -quiet -nofc 79a51f3500..., Last passed: Never
• ccextractor -stdout -quiet -nofc 767b546f96..., Last passed: Never

Check the result page for more info.