Add reliability reporting form for demo

[LaChope]

Resolves https://github.com/kbss-cvut/23ava-distribution/issues/162.

@blcham @lalisand I created the demo form, inspired from previous demo DA42-POH-39. Please, review it and then I can record a demo (form preview available on Netlify).

Here is its structure:

Reliability Report DA 42 - Flight Controls

    1. Fuselage No for DA 42
    ..required: true
    ..pattern: ^[0-9]{4,4}$
    ..validation-message: Please enter a 4-digit numeric code.

    2. Date of finding
    ..required: true

    3. Total flight hours on airframe
    ..description: Enter value in hours h and minutes m, i.e., examples of valid values are 0:15, 12:59, 234:00, 4567:49.
    ..required: true
    ..pattern: ^(0|[1-9]\d{0,3}):[0-5]\d$
    ..mask: hhhh:mm
    ..validation-message: Please enter a valid value using the format hhhh:mm.

    4. Overhauls on the airframe
    ..description: Number of airframe overhauls not including the currently ongoing overhaul.
    ..This field should be a number equal or lower to 30

    5. Classification the Flight Control issue
    ..required: true

    6. Observed condition for the hinges or the controls
    ..required: true

    7. Hinge pin condition
    ..required: true

    8. Potential estimated cause
    ..required: true

    9. Potential consequences
    ..required: true

    10. Affected AFM Section Flaps Elevator Rudder
    ..required: true

    11. Select repair action
    ..required only for completeness: true

    12. Estimated repair duration
    ..description: Enter value in hours h and minutes m, i.e., examples of valid values are 0:15, 12:59, 234:00.,System/equipment/block/part repair duration including disassembly and assembly.
    ..required only for completeness: true
    ..pattern: ^(0|[1-9]\d{0,2}):[0-5]\d$
    ..mask: hhh:mm

    13. Average maintenance crew
    ..description: The average number of men during system/equipment/block/part repairment, including disassembly and assembly, is calculated in FTE full-time equivalent. E.g., if 3 people participated with capacity one day per week 0.2 FTE, the average would be 3*0.2 = 0.6.
    ..required only for completeness: true

    14. Detailed description of the issue
    ..description: Failure description in words
    ..required: true

    15. Proposed corrective action
    ..description: Description of corrective action in words
    ..required only for completeness: true

    16. Affected flight control surfaces
    ..required only for completeness: true

    17. Year of production of the affected component
    ..description: Number of overhauls of defective equipment not including the currently ongoing overhaul.
    ..This field should be a number equal or lower to 2100
    ..This field must be greater or equal to 1950

    18. Overhauls performed
    ..This field should be a number equal or lower to 99

    19. Serial No. of the affected part
    ..required only for completeness: true
    ..pattern: ^[A-Za-z0-9]+$
    ..validation-message: Please enter a valid alphanumeric sequence. Your input should consist only of letters A-Z a-z and numbers 0-9. Special characters are not permitted.

    20. Engine serial number
    ..required only for completeness: true
    ..pattern: ^[A-Za-z0-9]+$
    ..validation-message: Please enter a valid alphanumeric sequence. Your input should consist only of letters A-Z a-z and numbers 0-9. Special characters are not permitted.

    21. Additional observations

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[blcham]

@LaChope possible values are missing